OS1st Wicked Comfort Performance Crew Socks Most Popular The Birkenstock Birko Sport Insoles

The Birkenstock Birko Sport Insoles are a two-piece insole designed to provide firm arch support

Special knit design that helps alleviate shin splints

Featuring an extra-firm high arch support

Take a look at the insole:

Item #: 30-213

OS1st Wicked Comfort Performance Crew Socks Most Popular The Birkenstock Birko Sport InsolesProduct Details Overview: The OS1st Wicked Comfort Performance Crew Socks feature OS1st's Dry1st moisture wicking technology that is 2x more durable and wicks moisture 5x faster than other leading brands. They feature 200 needle breathable comformance yarns that provide a cloud like cushioning with 360 blister protection and a light arch compression that will provide your feet with the perfect comfort for all day wear. Product Features: Dry1st