DIY Gel Soft Flask - 250ml

Name: Formula369 DIY Gel Soft Flask - 250ml - DIY Gel Soft Flask - 250ml
Brand: Formula369
SKU: 51278085095700
Price: 9.99 USD
Availability: InStock
Rating: 4.8431 (8 reviews)

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$9.99

Quantity

Color

Black

Quantity

Mixes directly with formula 369 drink mix for convenient carbohydrate loading
Fits up to 120g of carbohydrates per flask for extended endurance support
Portable 250ml size ideal for pockets, packs, or hand carry
Easy to fill and use with water bottle or shaker cup for quick preparation

Summarized by Shop

4.8

51 ratings

369 has been the best product for me to fuel with while on the bike. These soft flask make it easier to take in large quantities while still keeping full bottles of water on the bike.

Keith · July 14, 2026