UltraSpire Soft Flask 500ml Size:500ml Sweat-wicking fabric helps you stay

Sweat-wicking fabric helps you stay cool and dry and Featherlight vents improve airflow where you need it most

Velcro Fastening: Offers a secure fit

Run Time: 150 h on low

they stay secure without squeezing

From training runs to endurance events

UltraSpire Soft Flask 500ml Size:500ml Sweat-wicking fabric helps you stayUltraspire Soft Flask 500ml The ideal hand held solution for running or hiking Oval welded base for easy pocket placement while on the move Soft material conforms to your hand to provide a comfortable carrying experience Flexible design shrinks as you drink, reducing water movement on the run High flow bite valve auto seals after each sip and includes a twist locking cap for added security Large 42mm opening makes it easy to fill with ice or nutrition