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Fabric (Back): PWX 105D
Potassium: 250mg
Reduces volume as it empties: the flask shrinks as you drink to avoid annyoing sloshing noises and taking up excess volume when empty
Tunnel Effect™ hood with ventilation allows ideal airflow while keeping rain out
UltrAspire Synaptic 2.0 Waist Pack gad_ex_hk Fabric (Back): PWX 105DThe Synaptic 2. 0 waist pack is highly versatile and ideal for most training runs and races. The versatility comes from access to all compartments without taking the belt off. This pack provides the ability to carry hydration, nutrition, home essentials, and is equipped with Z pole attachments all while remaining very lightweight when loaded down. The original Synaptic was Ultrarunning Magazines Top Pick for stability; the Synaptic 2. 0 features the
