Birkenstock Birko Flex Arch Support Insoles Size:#46: Men's 13 For this product in a

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

Item #: OS1-OROLLER

and through the footbed for a customized fit

Low-friction top cover

for the perfect fit

Birkenstock Birko Flex Arch Support Insoles Size:#46: Men's 13 For this product in aOverview 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