SKU: 6682283165

First Endurance EFS Drink Mix

Sale price$22.45 Regular price$24.95
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Ships within 48 hours · Estimated delivery Jul 26 - Jul 31

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Description

First Endurance EFS Drink MixFirst Endurance EFS Drink Mix is light and easy to digest, and we find you can drink it again and again without getting sick of it, or having stomach issues. It provides the ideal blend of carbohydrates, amino acids, antioxidants, and electrolytes to fuel your working muscles and improve your endurance capacity during exercise. This drink mix uses a combination of glucose and sucrose, which helps increase absorption and utilization during exercise.

First Endurance EFS Drink Mix is light and easy to digest, and we find you can drink it again and again without getting sick of it, or having stomach issues. It provides the ideal blend of carbohydrates, amino acids, antioxidants, and electrolytes to fuel your working muscles and improve your endurance capacity during exercise. This drink mix uses a combination of glucose and sucrose, which helps increase absorption and utilization during exercise. Not to mention, it’s a 7% carbohydrate solution so it’s low concentration enough to reduce risk of stomach issues.

EFS Drink Mix also uses patented sources of calcium and magnesium, both of which are critical for proper muscle contraction and to neutralize stomach acid and reduce gastric distress. EFS Drink Mix is also unique in that it contains Malic acid, a naturally occurring substance found in many fruits, especially apples and pears. Research suggests that it may help boost performance by promoting energy production and fighting fatigue.

EFS is the solution to cramping. Using the latest amino acid technology, superior mineral bioavailability, and the addition of Malic acid, EFS drinks refuel and rehydrate better than ever before. It has a unique Total Electrolyte Blend that provides the highest electrolyte content available (1160mg of all 5 essential electrolytes per serving), so you won’t need to add anything else to this mix. It is made with no artificial flavors, sweeteners, or colors and is 100% vegan.

Feed’s Fave: Orange

How We Use It

We use this product during workouts and competition to keep our bodies hydrated with all the nutrients necessary for optimum performance. We recommend consuming one serving per half-hour of intense training.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 6682283165

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4.6 ★★★★★
Based on 7 reviews
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A
Arty
Lake Worth, US
★★★★★ 4
Boys vest
Color: Black, Size: 8
The vest looks nice. It seems well made and looks high quality. The fabric is nice. The buttons seem very sturdy. The vest is lightweight and shouldn’t be too sweaty. It’s a nice versatile piece. Can be dressed up or down. The fit is a smidge awkward on my boys, but they still like it.
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Reviewed in the United States on April 19, 2026
Q
QueenofAwkward
Carnegie, US
★★★★★ 5
Looks very nice and sizing is right
Color: Navy Blue, Size: 14, Color: Navy Blue, Size: 14
I ordered this for my 13-year-old who currently wears a size 12-14. He's closer to the 12, but has enough clothes in that size, so I ordered the 14 in navy blue. He chose the color, although it took him a while to decide. My kids so far have preferred not to go to school dances or dressier school functions, but I try to keep an outfit on hand in case they need it, and he does have to dress up a little for school band performances. He doesn't really have any kind of clothing preferences (yet), and is just as likely to look dressed up as he is to wear something completely wrinkled (but clean). This vest fits as expected. It is a bit large on him to the same degree that the other size 14 clothes he has are. He is pretty skinny, so while I think it would fit someone who is more average sized, I'm not sure how well it will do on huskier sizes. It has a nice buckle on the back as most men's vests like these have, so it can be adjusted in that sense. The navy color is a bit of a brighter shade than your average navy, but not outside of the normal range for navy. I like it. It’s hard to get the exact color in pictures. The fabric and construction both seem to be good quality. The fabric feels average compared to my husband's dress vests, better than the lower quality/cheaper ones and not quite as nice as the ones he spent more on. This boy's dress vest is currently being sold for approximately $20, which I think is great for a nice dress vest like this.
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Reviewed in the United States on February 27, 2026
C
C. Snyder
Port Orchard, US
★★★★★ 5
"Navy Vest & Pocket Square Charm; Formal Polish for Perfect Pairing
Color: Navy Blue, Size: 8, Color: Navy Blue, Size: 8
This very charming boys navy blue vest pairs perfectly with the accompanied pocket square, adding formal charm to dockers or navy khakis. My boys look dapper in matching sets. A timeless style that elevates any outfit. Made with quality fabric that appears to resist wrinkles, with the pocket square folding neatly for that polished touch. Comfortable and event ready.
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Reviewed in the United States on April 14, 2026
S
sunflower
Lake Worth, US
★★★★★ 5
Adorable boys vest! Dress up or down!
Color: Light Gray, Size: 5, Color: Light Gray, Size: 5
Super cute vest! Made of quality materials. The buttons on the front all work very well. My four year old can easily button and unbutton them himself. All 3 pockets in the front are functional cute little pockets. There are vertical line stitchings making this vest look just like dad's. The back is easily adjustable. I will stay I was nervous it was going to be too big for my almost 4 year old - I ordered the smallest size available, size 5 and it actually fits him perfectly. In fact, I could even have gotten him the size 6 and it would have fit so I recommend to size up. It's a breathable vest. The gray color goes with lots of other colors. It's an adorable vest. You can dress it up with a nice suit or dress down. It's adorable with a t shirt and jeans. The inside back is a nice silky material. This vest is very well made - its thick but breathable and a great value for the dollar. I highly recommend.
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Reviewed in the United States on March 6, 2026
S
Sweet_Gato
San Leandro, US
★★★★★ 5
Perfect Fit and Amazing Quality – Highly Recommend!
Color: Black, Size: 12, Color: Black, Size: 12
I am absolutely thrilled with this boys’ formal vest! The size was spot on—it fit perfectly without being too tight or too loose, which can be hard to find for kids’ dress clothes. The material feels premium, soft yet structured, and it looks much more expensive than it actually is. I ordered it for a wedding where my son was the ring bearer, and it photographed beautifully. It gave him such a classy, well-dressed look while still allowing him to move comfortably through the day. The stitching and finish are top-notch, and the color stayed vibrant even after washing. It paired perfectly with a white shirt and dress pants we already had. I also appreciate how versatile it is—it’ll be great for Easter, family photos, or any other special occasion. Overall, I’m extremely happy with the quality, fit, and style of this vest. Definitely a 5-star purchase that I would buy again without hesitation!
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Reviewed in the United States on March 6, 2026

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