Hose and stoppers for Flask
Guide only. Tap cm or in to switch units.
Vests - unisex / men
One sizeSternum 56 – 114 cmSternum 22 – 45 in
Vests - women
| Size | Sternum | Bust |
|---|---|---|
| XXS – M | 66 – 84 cm26 – 33 in | 76 – 91 cm30 – 36 in |
| L – XXL | 84 – 104 cm33 – 41 in | 94 – 112 cm37 – 44 in |
| 1X – 3X | 104 – 127 cm41 – 50 in | 114 – 130 cm45 – 51 in |
Most Nathan vests are one size and adjust with the straps. Hydration belts too.
Reflective vests
| Size | Sternum |
|---|---|
| S / M | 61 – 102 cm24 – 40 in |
| L / XL | 96.5 – 114 cm38 – 45 in |
Worn over your layers. Between two sizes, take the larger one.
Tops - men
| Size | Chest |
|---|---|
| XS | 86 – 91 cm34 – 36 in |
| S | 94 – 99 cm37 – 39 in |
| M | 102 – 107 cm40 – 42 in |
| L | 109 – 114 cm43 – 45 in |
| XL | 117 – 122 cm46 – 48 in |
| 2XL | 124 – 130 cm49 – 51 in |
Nathan publishes chest measurements only.
How to measure
Sternum: arms relaxed, measure just below the chest bone, tape parallel to the floor.
Chest / bust: measure the fullest part, tape parallel to the floor.
All prices are displayed including taxes.
The amount shown is the final price you pay at checkout (shipping fees may apply).
Free shipping on all orders of $200 or more, in Canada and the United States.
Orders ship within 48 hours.
Enjoy 14-day returns after delivery.
Items must be new, unworn, and with original tags attached.
All prices are displayed including taxes.
The amount shown is the final price you pay at checkout (shipping fees may apply).
Free shipping on all orders of $200 or more, in Canada and the United States.
Orders ship within 48 hours.
Enjoy 14-day returns after delivery.
Items must be new, unworn, and with original tags attached.
All prices are displayed including taxes.
The amount shown is the final price you pay at checkout (shipping fees may apply).
Free shipping on all orders of $200 or more, in Canada and the United States.
Orders ship within 48 hours.
Enjoy 14-day returns after delivery.
Items must be new, unworn, and with original tags attached.
Why this price?
- Samples and overstock from major brands
- New products
- Limited quantities – no restock
the Nathan Soft Flask Cap & Hose, designed to facilitate hydration on the go without having to handle your water bottle. Thanks to its long flexible tube and high-flow valve, it allows you to drink easily while keeping your hands free and your eyes on your activity. Compatible with several Nathan soft flasks, it transforms your hydration system into an even more practical solution for running and trail.
Features:
✓ Long flexible tube for easy water access
✓ High-flow bite valve for quick hydration
✓ Interchangeable system with standard caps
✓ Compatible with Nathan soft flasks (12 oz, 18 oz, 20 oz)
✓ Consistent flow without tube kinking
Materials:
✓ Soft, kink-resistant tube
✓ Silicone valve
✓ Durable plastic cap
Highlights:
✓ Allows you to drink without slowing down or stopping
✓ Ideal for running, trail, and long distances
✓ Improves hydration accessibility
✓ Quick and easy installation
✓ Compatible with multiple Nathan systems
