Oboz is known for outstanding fit and feel, and our O FIT Insole Plus is a big reason why. While O FITInsoles come standard in our shoes, the O FIT Insole Plus is an upgrade in just about any other shoe. Now you can max out stability and support in whatever shoes youre wearing with our trim-to-fit aftermarket insole. Dual-density EVA throughout provides both cushioning and durability, and special reinforcement under the metatarsal and heel adds extra protection to high-strike zones.Insole sizing:XXS: W’s US shoe size 5.5 – 6.5XS: W’s US shoe size 7 – 8S: W’s US shoe size 8.5 – 9.5/ M’s US shoe sizes 7 – 8M: W’s US shoe size 10 – 11/ M’s US shoe sizes 8.5 – 9.5L: W’s US shoe size 11.5 – 12.5/ M’s US shoe sizes 10 – 11XL: M’s US shoe sizes 11.5 – 12.5XXL: M’s US shoe sizes 13 – 14