Specifications Uses: Provides relief for plantar fasciitis, flat feet, fallen arches, metatarsal pain, lower back pain, leg pain Materials: EVA foam Antimicrobial lining US Shoe Sizing: X-Small: Men's: 3.5 - 5, Women's: 4.5 - 6 Small: Men's: 5.5 - 7, Women's: 6.5 - 8 Medium: Men's: 7.5 - 9, Women's: 8.5 - 10 Large: Men's: 9.5 - 11, Women's: 10.5 - 12 X-Large: Men's: 11.5 - 13 Care Instructions: Hand wash using cool water and mild soap Dry by dabbing with towel to remove the majority of the water Allow insoles to air dry until all moisture is removed What’s Included: Full length orthotics- one pair 60 day guarantee UPC:683405233671 (X-Small); 683405233688 (Small); 683405233657 (Medium); 683405233695 (Large); 683405233664 (X-Large) Product Number:: INS1005XS (X-Small); INS1005S (Small); INS1005M (Medium); INS1005L (Large); INS1005XL (X-Large) Shipping Weight:4 ounces