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

The main body of this insole is a layer constructed of a closed cell polyurethane Poron foam to provide superior shock absorption due to its density and rubber like qualities

Item #: COB-TOFINO-M

Clear thin insert not readily visible and is ideal for sandals

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