Canvas T-Strap | Wheatmade of dyed 100% organic cotton canvas, with hook and loop strap fastening, and rubber toecap. available in a wide range of colours. tip! we recommend you choose one size up from your usual size. the measurements in cm are for the insole! 100% cotton textile upper and lining made in spain euro cm recommended 18 10. 5 size up 1 2 sizes 19 11. 1 size up 1 2 sizes 20 11. 7 size up 1 2 sizes 21 12. 4 size up 1 2 sizes 22 13. 4 size up 1 2 sizes 23 14