TENTIAL's Conditioning Model sandals, size XS. Unisex design reduces fatigue and provides a comfortable fit. Compared to regular sandals, these are made of a material similar to Crocs and are firmer. In addition, they are made slightly wider, giving them an easy-to-wear feel. I've only tried them on indoors. Thank you. - Brand: TENTIAL - Model Name: Conditioning Sandal - Size: XS (23-23.5cm) Thank you for looking.