UltrAspire UltraFlask 550 Hybrid Bottle Spikes Two front waistband pockets and

Two front waistband pockets and a secure back pocket give you storage solutions for keeping gels and keys

and calcium

Impact protection and high energy return

provides a lightweight and comfortable feel with excellent ventilation and fast-drying capabilities

UltrAspire UltraFlask 550 Hybrid Bottle Spikes Two front waistband pockets andUltrAspire introduces yet another milestone in hydration history! All the benefits of the sport bottle without the downsides and all the benefits of a soft flask without the usual problems such as taste and staining from carbohydrate drinks. The UltraFlask 550 Hybrid Bottle is a cross between a hard bottle and a soft flask. This bottle has a body shape that conforms to the place its kept for the ultimate comfort, access, carriage and squeeze ability.