18oz Nathan x Hydrapak soft flask with exospine 3D construction maximizes water storage while minimizing bulk for efficient hydration
Angled flask holder with bungee cord ensures easy access and secure fit during movement
Breathable, soft, and durable mesh fabrics keep you cool and comfortable on long runs
Expandable zippered stretch pocket fits most smartphones for secure, convenient storage
One size fits most adjustable belt with secure buckle closure for a customizable, no-bounce fit
Summarized by Shop
Built for runners who want the lightest possible hydration belt, the Pinnacle FeatherLite Belt pairs an accessible 18oz Soft Flask with ExoSpine™ in a stripped-down, breathable design. Ideal for daily training, marathon prep, and road runs where every ounce matters.
An angled flask pocket with bungee secures the carry, and a zippered stor
Storage Capacity
0.75 L (535 ml)
Weight with Flask
140 g (4.9 oz)
Material
Mesh, synthetic, nylon
Color
Black, Silver
Compatible Container Capacity
18 fl oz (535 ml)
Pattern
Solid
Summarized by Shop
3.3
3 ratings
5
4
3
2
1
It’s great for mid distance runs and it doesn’t bounce which I love. But a major problem for me is that it slowly rotates no matter how tight the belt is. It wouldn’t be a huge problem but because it’s on my face it scratches my arm.
A
Amber · July 18, 2025
Terrible
Slips around waist, slips up. Does not stay put. Had to turn it in to a sling to finish my run.