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color:Clear||view:sku image primary||seo:Insulated Soft Flask with ExoSpine 18oz - Front VIew

Nathan Sports

4.5 (123)

Insulated Soft Flask with ExoSpine 18oz

Name: Nathan Sports Insulated Soft Flask with ExoSpine 18oz - Insulated Soft Flask with ExoSpine 18oz
Brand: Nathan Sports
SKU: 40634761150552
Price: 42.0 USD
Availability: InStock
Rating: 4.1667 (3 reviews)

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$42.00

Quantity

Color

Black

Quantity

Built for runners who want insulated hydration in their vest, the Insulated Soft Flask with ExoSpine™ 18oz is a large-capacity insulated soft flask designed to keep fluids cool over long efforts. Fits in front hydration vest pockets or in b...

Reviews

4.2

6 ratings

It is fine

It is a little rounder and wider at the bottom than I expected. I did not see it was a bite top in the description when I ordered it. Not my preference. It seems unlikely to insulate very well. Overall, there are much cheaper options that would work as well or better. I could have purchased 3 regular ones for what I spent on this after paying for the item plus shipping. I would not repurchase.

Kristin · July 18, 2025