❶Q-A-Question:Question：9 1/2 size up or down?Answer: It is recommended that you purchase size 10, if it is not suitable, you can contact us to replace it for you. ❷Q-A-Question:Question：Could these be worn in the poop for water aerobics?Answer: Well, I don’t intentionally wear anything in poop so I am not sure I can help you out on that. However, if you’re asking about wearing them in a pool I would say probably not. They don’t seem like they are tight enough to stay put in water. However they are super comfortable shoes and super cute to wear! ❸Q-A-Question:Question：How soft are the soles??Answer：These are the most comfortable shoes I’ve ever bought and I want them in every style and every color possible. The soles are incredibly soft, but not flimsy at all and have great arch support! They are super sturdy and held up well for a summer of camping!Size Chart:Size: 35 US: 4.5 UK: 3 EU: 35 Length: 22.5cm/8.86'' Foot wide: 8-8.5cm/3.2-3.4'' Size: 36 US: 5.5 UK: 3.5 EU: 35.5 Length: 23cm/9.06'' Foot wide: 8.5cm/3.4'' Size: 37 US: 6 UK: 4 EU: 36 Length: 23.5cm/9.25'' Foot wide: 8.5-9cm/3.4-3.5'' Size: 38 US: 6.5 UK: 4.5 EU: 37 Length: 24cm/9.45'' Foot wide: 9cm/3.5'' Size: 39 US: 7 UK: 5 EU: 38 Length: 24.5cm/9.65'' Foot wide: 9-9.5cm/3.5-3.7'' Size: 40 US: 7.5 UK: 5.5 EU: 39 Length: 25cm/9.84'' Foot wide: 9.5cm/3.7'' Size: 41 US: 8.5 UK: 6.6 EU: 39.5 Length: 25.5cm/10.04'' Foot wide: 9.5-10cm/3.7-3.9'' Size: 42 US: 9 UK: 7 EU: 40 Length: 26cm/10.24'' Foot wide: 10cm/3.9'' Size: 43 US: 9.5 UK: 7.5 EU: 41 Length: 26.5cm/10.43'' Foot wide: 11cm/4.1''