Fansela(TM) Unisex Causal Leisure Comfortable Dot Anti-slip Cotton House Slipper Cotton Imported Made of cotton and flax,durable and comfortable Special open-toes design,breathable and sweat proofing Suitable for couples and families, men and women can all wear it,protect your wooden and carpet floor with this light-weighted and cozy slippers The M size applyes to the Asian size 35 - 38 ,the L size applyes to the Asian Size 40 - 42 The ( Asian Size 35 - 38)US size 5 - 6.5 converts to UK size is 4 - 5.5, the (Asian size 40 - 42) US size 7.5 - 8.5 converts to uk size is 6.5 - 7.5