Birkenstock BirkoClassic Arch Support Insoles Size:#36: Women's 5 They are constructed with a

They are constructed with a Trevira Bioactive fiber that consists of cotton terry cloth woven with nano sized silver particles for skin safe

Item #: SOUL-X

A full heel & midfoot support provides you with a deep heel cup for enhanced support & stability in addition to a rigid arch support that will ensure maximum support all day long

For additional warmth

Birkenstock BirkoClassic Arch Support Insoles Size:#36: Women's 5 They are constructed with aProduct Details Overview: The Birkenstock Birko Classic Arch Support Insoles are a 3 4 length, rigid orthotic that is designed for all arch types. They feature a deep heel cup for natural cushioning and shock absorption, a natural contoured arch support for longitudinal medial arch support, and a metatarsal support with a gentle raised platform for raising toes into the natural position. The Birkenstock Birko Classic Arch Support Footbeds are