♛Q-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. 
♛Q-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! 
Size Chart:
Size: 35 US: 7.5 UK: 6.5 EU: 40 CN: 225 Foot Length: 25cm/9.84'' Foot Wide: 8.5cm/3.3"" Heelup: 2cm/0.8"" 
Size: 36 US: 8 UK: 7 EU: 41 CN: 230 Foot Length: 25.5cm/10.04'' Foot Wide: 8.5-9cm/3.3-3.5"" Heelup: 2cm/0.8"" 
Size: 37 US: 8.5 UK: 7.5 EU: 42 CN: 235 Foot Length: 26cm/10.24'' Foot Wide: 9cm/3.5"" Heelup: 2cm/0.8"" 
Size: 38 US: 9 UK: 8 EU: 43 CN: 240 Foot Length: 26.5cm/10.43'' Foot Wide: 9-9.5cm/3.5-3.7"" Heelup: 2cm/0.8"" 
Size: 39 US: 9.5 UK: 8.5 EU: 44 CN: 245 Foot Length: 27cm/10.63'' Foot Wide: 9.5cm/3.7"" Heelup: 2cm/0.8"" 
Size: 40 US: 10 UK: 9 EU: 45 CN: 250 Foot Length: 27.5cm/10.83'' Foot Wide: 10.0cm/3.94'' Heelup: 2cm/0.8"" 
Size: 41 US: 10.5 UK: 9.5 EU: 46 CN: 255 Foot Length: 28cm/11.02'' Foot Wide: 10.0-10.5cm/3.94-4.13'' Heelup: 2cm/0.8"" 
Size: 42 US: 11 UK: 10 EU: 47 CN: 260 Foot Length: 28.5cm/11.22'' Foot Wide: 10.5-11.0cm/4.13-4.33'' Heelup: 2cm/0.8"" 
Size: 43 US: 11.5 UK: 10.5 EU: 48 CN: 265 Foot Length: 29cm/11.42'' Foot Wide: 11cm/4.33'' Heelup: 2cm/0.8"" "