"All the Insoles come with a size card for you to trim to your own individual shoe size - Standard size will fit up to a size 8 (UK) - Large size will fit up to size 13 (UK) "PORON Trusted for use in orthopaedic and prosthetic cushioning applications for more than 40 years, it’s the material of choice for specialty podiatric needs. Poron Dual Layer This high performance urethane combines the curability and shock absorbing qualities of Poron 4000 ( Grey / High Performance ) with the softness and comfort of Poron 94 ( Pink / Slow Memory ) resulting in a superior dual layer foam. These insoles are contouring and breathable and should maintain their performance for the life of the product. A durable high performance urethane with excellent shock absorption properties. Durable, high performance shock absorption Poron Is highly regarded for its shock absorbing qualities outperforming; vinyl sponge, neoprene sponge, sponge rubber, latex foam and solid viscoelastic. Poron is a microporous polyurethane foam which also absorbs moisture and sweat away from socks and feet. Its flat layer fits comfortably into slim or tighter fitting footwear while giving superior bounce to cushion effectively the 'stepshock' walking and running and other strenuous activities.
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