Shokz - Openswim Color:Blue With all the essential amino

With all the essential amino acids you need to fend off muscle fatigue

Exterior: 98% polyamide

you can count on this sock for comfort and durability

A new generation of foam designed specifically for trail shoes

Shokz - Openswim Color:Blue With all the essential aminoTake open ear listening to new depths. OpenSwim is engineered with Shokz's signature open ear design and 7th generation bone conduction technology to ensure comfortable, interference free listening all day, in or out of the water. OpenSwim is completely waterproof and submersible, and has four gigabytes of MP3 storage, allowing athletes to train harder; no wires, no devices, no limits. 4 GB of MP3 storage Not Bluetooth enabled IP68 Waterproof Autonomy