reason to buy this men's running shoes 1: Breathable and lightweight 2: Wear resistant slip 3: Elastic cushioning 4: Design fashion 5: Can wear all seasons Check the size of your feet according to our autper size chart Inner length of the shoe: men shoes size US 6.5 = UK 5 =EUR 39= Foot length 24.5 cm ( 9.64 In) men shoes size US 7 = UK 6 =EUR 40 = Foot length 25 cm (9.84 In) men shoes size US 7.5-8 = UK 7 =EUR 41 = Foot length 25.5 cm (10.04 In) men shoes size US 8.5 = UK 8 =EUR 42 = Foot length 26 cm (10.24 In) men shoes size US 9-9.5 = UK 9 =EUR 43 = Foot length 26.5 cm (10.43 In) men shoes size US 10 = UK 10 =EUR 44= Foot length 27 cm (10.63 In) men shoes size US 10.5 = UK 11 =EUR 45 = Foot length 27.5 cm (10.83 In) men shoes size US 11 = UK 12 =EUR 46 = Foot length 28 cm (11.02 In) men shoes size US 12= UK 13 =EUR 47 = Foot length 28.5 cm (11.22 In) Best of all: The 100% money back guarantee! 1.Wide width customers ORDER ONE SIZE BIGGER,regular width customers order regular size. 2.Please allow little color difference due to different camera or screen show 3.Little smell is normal,please putting it outside for few days, the smell will disappear