Home Athletes Products


SIZER XXL is a powerful mass gaining formula designed to pack size on the hardest gainers. This potent formula delivers more calories and protein gram for gram. American Pure Whey puts an emphasis on the amount of protein per serving since it is the only nutrient proven to assist in promoting muscle mass. Enriched with 70 g of protein per serving which will assist in quick muscle recovery post workout.
American Pure Whey uses only cross flow, micro filtered, cold processed ion exchanged whey protein. This protein has a superior amino acid profile, an unbeatable bioavailability, is low in lactose and is instantized for easy mixing without a blender.
You simply will not find a protein of this grade used in other weight gain formulas. American Pure Whey has avoided overloading its formula with carbohydrates. American Pure Whey uses just enough to help fuel your workouts and replenish depleted glycogen stores, but not enough to cause drowsiness.
Studies show that too many carbohydrates increases the levels of serotonin crossing over the brain barrier, thereby inducing drowsiness. Fat, although shunned by some, is highly concentrated energy source (double that of protein and carbohydrates) supplying the body with fat soluble vitamins A, D, E, and K.
Fat is also a necessary component of all cell membranes, nerve covering, digestive secretions and most importantly, hormone production. A diet too low in fats may actually impair growth.
SIZER XXL contains nearly double the amount of protein (amino acids) than competing brands, and only protein builds muscle. No product contains more protein or calories or derives its calories from higher quality muscle building ingredients. The next generation of Musclegain.

Supplement Facts


Contains 70 g protein, 5 g creatine, 14 g glutamine and 150 g carbohydrate per serving.
The quality calories of protein can build muscle tissue (not carbohydrates or fats), instant Anabolic Muscle contains nearly double the amount of protein than competing brands; containing 30% protein - highest quality amino acids (more than any other brand). No product contains more protein or calories unless fat is added or the serving size is increased.




Take 3 serving of American Pure Whey SIZER XXL.

Flavor and Price


SIZER XXL Review from Brandon S
  1. Name:Brandon S
  2. Years Bodybuilding: 2 years bodybuilding, numerous years training for different forms of Athletics
  3. Favorite Bodypart: Quads, Traps, Biceps, I love them all
  4. Favorite Exercise: Deadlifts, Squats, Floor Presses, Bench Presses done with chains
  5. Favorite Supplements: American Pure Whey: SIZER XXL
  Social Media Links: Face book: Brandon Current Diet: 1) Immediately Upon Waking: Either 3 scoops Sizer XXL or 2 BCAA's 1 Scoop of Whey 2) 12 oz Chicken with 1 cup Sushi Rice 3) Post Workout: 3 scoops Sizer XXL or 3 Scoops of Whey mixed in Water and after wards drink a Gatorade. 4) 6 Eggs 1 Cup Oats 1/2 cup fruit 5) 12 oz Chicken with 4 slices Ezekial Bread 6) 8 oz Red Meat 1/2 cup brown rice 7) before bed 8 oz Red Meat 1/2 cup veggies. Sizer XXL by American Pure Whey: Putting you in larger sized T-shirts. Most supplement companies have the craziest and most outlandish sales pitches. They draw you into a supplement with some shiny label. They then further produce claims that fall completely short. American Pure Whey has a complete different approach to supplements. They are a straight forward NO BS company and I’m proud to be a customer and now sponsored Athlete by this company. I know many sponsored athletes of the “shiny label” companies that simply sale the products to get money to buy a better supplement. I have no worries of doing so with this company and I can feel even more comfortable to report to you my actual results.   USES: WEIGHT GAIN/GROWTH: Sizer XXL is American Pure Whey’s version of a classic weight gainer. The great thing about this product is due to its nutritional makeup it has multiple uses. This product is great for the person who has a High Metabolism and needs to add more calories (1033 per serving) to their diet to grow. Some tend to think any calorie equals growth, while it does it is not always the growth we want. Sizer XXL is designed to pack on some serious muscle tissue. People seeking this route could use this product immediately upon waking, and eat breakfast approximately an Hour later. Or have this any time during the day when there is a large split between your meals. POST WORKOUT: Most Weight Gainers rely strictly on Sugar for the Carbohydrate source. We all know that this ends badly if we were to ingest 150g of sugar. However Sizer XXL has only 41g of sugar. This makes this product ideal in numerous ways that some “Weight Gainer 52 million” can’t live up to. Sizer XXL is the most complete POST-WORKOUT product there is. Post workout our body needs some sugar for insulin response and Carbohydrates to replenish glycogen stores and shuttle nutrients into the broken down muscle Tissue. In Meathead terms, it makes the protein actually work. Those Carbs cause the insulin to spike thus shuttling the 70g of Protein, 5g Creatine, 14g Glutamine into the muscle tissue for immediate recovery and growth. You would have to go out and buy 4-5 independent supplements and then mix them together to get this same equation. Sizer XXL takes the guess work out of the mix. For Post-Workout I recommend consuming the 4 scoops with Skim Milk. MEAL REPLACEMENT: This product is not advertised as a Meal Replacement but can still actually be used in this way. For those who would want to lower the carb content you could simply mix 2 scoops of Sizer XXL with one scoop of American Pure Whey Protein. This keeps the protein up while keeping the carbs moderate. I tried this for my extremely busy hours when I couldn’t get a meal in and it worked great. Bam Bam on Sizer XXL: I tried Sizer XXL in a couple of different ways. I’m a large guy and sometimes it can be harder for me to get enough food in to continue growing. I first used Sizer XXL Immediately in the morning just after waking, mixed with ice, water, and the 4 scoops all done in the blender. While Sleeping our body is fasting and it needs nutrients immediately in the morning. Also many people do not have the time to eat a traditional breakfast so to say. An hour later I consumed 6 eggs. The other way I tried Sizer XXL is POST-WORKOUT. I found it to be most effective here. Immediately following my chest workout I came home and had 4 scoops in a shaker bottle mixed with skim milk. Because my body received the nutrients so fast, my pump carried on much longer than typically. I found myself later in the day still flexing and squeezing my Pecs feeling the pump. I think this is attributed to the complete mix of the product and the inclusion of creatine. MIXABILITY: 4/5 This is a huge thing for me when it comes to weight gainers. Because most weight gainers use sugar, and this one has much less sugar I expected more chunking. I really put this to test when using skim milk in a shaker bottle, It stirred up just fine with me simply shaking the shaker bottle a few times. I gave it a 4 out of 5 simply because you are going to need a larger shaker bottle to mix 3 or 4 scoops. TASTE: 5/5 Most weight gainers have this drastically chalky taste. So much so that for years I have strayed away from weight gainers. The Chocolate Sizer XXL taste good in water and absolutely amazing mixed in skim milk. I would have no problem consuming this shake on a daily basis. COST: 5/5 19.99 for 4lbs of Weight Gainer. So if you want to simply try the product out to see if you’d like it the 4lb jug is the way to go. The great standard about American Pure Whey the more you buy the cheaper it gets, its 39.99 for a 10lb jug. To buy all of the supplements individually would get very expensive and it would be tough to get the flavor anywhere cost to as good as Sizer XXL. Remember you Heard it hear First!!! Train Insane Or Remain The Same!!! Brandon “Bam Bam” Stoudemire
Nutrient Timing with American Pure whey Sizer XXL

One of the largest misunderstandings I see in bodybuilding currently is nutrient timing.  I see some guys eating two meals a day, some with 5, and with all these different choices it leaves some people in a state of confusion. 

The easiest way of thinking about it, is by picturing an IV bag.  The bag slowly drips providing nutrients very slowly.  This is exactly how we as bodybuilders need to think of nutrition.  We need a constant supply of quality calories throughout the entire day to provide the needs for repairing muscle tissue and providing new growth.  This thought process has been why you have seen many big name bodybuilders actually wake up in the middle of the night and consume a meal at 3am and then go back to bed, during a bulk.  Their idea is that sleeping all night they go into a fasting state and are missing an opportunity for growth.  I have tried this and I don’t recommend it.  I believe it interrupts your sleeping pattern which inhibits the amount of natural Growth Hormone the body is releasing.  Keeping this ideology in mind, this shows us that we must have a meal/shake immediately upon waking and prior to going to bed to completely optimize the bulking process and to keep protein and amino acids within the blood stream. 

In my previous blogs, I spoke of how great I thought Sizer XXL is as a morning shake.  However, there is one time when the body can metabolize nutrients and at much higher rate and use the food in a much higher anabolic ration, this is post workout.  During a workout our body tears down the tissues and there is an immediate need for nutrition otherwise the body will go into a catabolic state and tear down muscle tissue for the sake of energy.  This is our bodies natural response to protect itself and its great in extreme situations when survival is the only goal.  To combat this natural reaction we need simple carbohydrates and a fast digesting protein.  Sizer XXL gives us a supply of 41g of simple sugar for fast digesting carbohydrates…… your saying “wait my trainer at planet fitness tells me simple sugars are bad.”  While this statement is primarily true, simple sugars are excellent post-workout because they cause an insulin spike.  This spike in insulin levels allows our body to shuttle the other nutrients that we put in directly to the blood stream which are then taken to the muscle tissue.  Hence we use the simple sugars to spike the insulin to carry the 70g of muscle building protein, directly to the muscle.  The greatest part of Sizer XXL in comparison to other post workout products is that it includes Creatine monohydrate (5g) and Glutamine (14g).   Many clinical studies have shown that Creatine is much more anabolic when consumed in a higher insulin state.  Simply put, the simple carbs allow your body to actually use the amount of creatine that is in the product and do so in a much faster pace.  Sizer XXL uses a mixture of Whey Protein Isolate and Concentrate which are both very fast digesting proteins.  All of this together creates a nutritional synergy that is perfectly primed for post workout.  Post-Workout your body has about an Hour to take advantage of this Anabolic window, if you don’t take advantage of it during this time your body will return to normal after the hour time period.  That’s one of the major reasons for the large amount of protein in Sizer XXL (70g).  Simply put if you’re not having some simple carbohydrates post workout then you’re doing it wrong.  Sizer XXL has taken the guess work out of it.

The picture of me with my Sizer XXL is a relaxed state.  The mirror picture was taken post workout after I consumed My Sizer XXL and my arms are totally pumped and able to maintain the pump.  Sizer XXL is allowing me to recover faster and train harder. 

Write Your Own Review
Enter your name:
Enter your Email id:
Write your review here:
Recent Posts
» Ironmill DDay2 competition - Keith Gavazzi First place
» Two week out from NPC USA national competition
» AMERICAN PURE WHEY 100% Whey protein matrix, chocolate Review
» Taste of sweet success fueled by American Pure Whey!!
» How to determine caloric intake on a diet
» NPC USA bodybuilder preparing for Michigan State championships
» my review of 100% pumped
» NPC National Bodybuilder James Vondoloski Training for the NPC USA Nationals
» American Pure Whey Review: 100% Whey Protein Isolate Strawberry Banana
» NPC national competitor James Vondoloski W/E 10/20/2012
» GPP Conditioning
» Preparing for the NPC nationals 10/15/2012
» NPC nationals bound James Vondoloski Workout log W/E 10/6/2012
» American Pure Whey Employees at the Mr. Olympia Las Vegas 2012
» Nutrient Timing with American Pure whey Sizer XXL
» NPC National competitor James Vondoloski with his favorite Protein
» AMERICAN PURE WHEY 100% Whey protein matrix, chocolate Review
» Preparation for the NPC Western Michigan Bodybuilding Invitational 2012 9/26/2012
» Preparation for the NPC Western Michigan Bodybuilding Invitational 2012 9/25/2012
» Preparation for the NPC Western Michigan Bodybuilding Invitational 2012 9/24/2012
» The Real Deal on Whey Isolate
» Preparation for the NPC Western Michigan Bodybuilding Invitational 2012 - 9/17/2012
» SIZER XXL Review from Brandon S
» Brandon S
» Keith Steele Gavazzi
» Matthew Morgan
» Front Double Biceps Posing
» Maxwell
» Training Article : - How T Shape your Chest
» Jim VonDoloski C.P.T.
» Brandon Stoudemire
» Emeka Okammor
» Therma Ripped
» Amino Burst
» Bcaa Tablets
© Copyright 2014. All Rights Reserved.