Add one or several Nathan Fusion 8 oz Add-On Flasks to the Nathan Fusion Base Belt to create a customized hydration system. The updated 8 oz soft Super Flex Flask features Nathan's one-way valve Race Cap that opens and closes automatically, so you don't have to squeeze hard to get a sip.
*Compatible with Nathan Fusion Base Belt
- Black (6509NB)
- Cabaret Pink (6509NK)
- Single 8 oz Super-Flex flask attaches to Nathan Fusion Base Belt via soft neoprene sleeve
- Neoprene back adds comfort and prevents bouncing
- Molded SpeedFit plastic holster makes it easy to grab flask quickly
- Easy-squeeze 8 oz Nathan Super-Flex flask
- Race Cap with high-flow, one-way valve opens and closes automatically for a quick swig; no need to squeeze hard to get liquid out
- Cap seals well and prevents leaking
- BPA-free and won't leech plastic taste
- Bottle and cap are dishwasher safe on top rack
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