First,you need to measure your foot length,next,please according to your foot length to choose shoe size. EUR 31= Insole Length 20.5cm=US Size 3.0; EUR 32= Insole Length 21.0cm=US Size 3.5; EUR 33= Insole Length 21.5cm=US Size 4.0; EUR 34= Insole Length 22.0cm=US Size 4.5; EUR 35= Insole Length 22.5cm=US Size 5.0; EUR 36= Insole Length 23.0cm=US Size 5.5; EUR 37= Insole Length 23.5cm=US Size 6.0; EUR 38= Insole Length 24.0cm=US Size 6.5; EUR 39= Insole Length 24.5cm=US Size 7.0; EUR 40= Insole Length 25.0cm=US Size 7.5; EUR 41= Insole Length 25.5cm=US Size 8.0; EUR 42= Insole Length 26.0cm=US Size 8.5; EUR 43= Insole Length 26.5cm=US Size 9.0; EUR 44= Insole Length 27.0cm=US Size 9.5; Department Name:Adult Athletic Shoe Type:Soccer Shoes Applicable Place:Outdoor Lawn Shoe Width:Medium(B,M) Technology:DMX Feature:Breathable,Massage,Waterproof Closure Type:Lace-Up Upper Material:PU Insole Material:Latex Gender:Men Types Of Hobnail:Soft Groud(SG) Outsole Material:Rubber Lining Material:Cotton Fabric Model Number:kids soccer kids soccer shoes:children football messii kids soccer shoes:indoor soccer shoes soccer cleats:voetbalschoenen football shoes:botas de futbol scarpe da calcio:superfly soccer shoes shoes:soccer