Superfeet All Purpose Support Low Arch Insoles Size:F The wide screw-on cap has

The wide screw-on cap has a jaunty handle for easy opening and closing and an insulating layer for better performance

With a technical shell fabric and high loft down but only the essential design features

solid Stainless Steel

Flat valve compatibility: No

Superfeet All Purpose Support Low Arch Insoles Size:F The wide screw-on cap hasGreat for Slim Fitting Footwear One of the most versatile Superfeet insoles, Superfeet BLACK shoes inserts feature an easy going, low profile design to improve the fit, comfort and performance of a wide range of footwear. Made to fit well in moderate to slim fitting footwear, even some without removable liners. Trim to fit your shoe size.