Birkenstock Birko Flex Arch Support Insoles Size:#46: Men's 13 for the perfect fit

for the perfect fit

even in wet conditions

For this product in a more traditional foam-body construction with a semi-rigid arch support

This product was previously part of the New Balance insoles product line and was called the New Balance IAS3720 Arch Stability Insoles

The shape of the Star Inserts is unique in that there is no heel or toe

Birkenstock Birko Flex Arch Support Insoles Size:#46: Men's 13 for the perfect fitOverview For those looking for pure foot support without any additional features, the Birkenstock Birko Flex Insoles should be your go to choice. These insoles are made from pure unlined solid EVA, offering a rigid support shell without any padding, cushioning, or top cover. Reminiscent of custom orthotics, these insoles will provide firm support for the heel, arch, and metatarsals in a design that is extremely low profile, waterproof, and