A knotted bow secures style in this flexible ballet flat that has a nearly weightless feel. Lightweight: puts cushioning and performance underfoot with an emphasis on streamlined comfort Treated with antimicrobial technology to keep you feeling fresh and dry Foam cushioning with arch support Textile upper and lining/synthetic sole Imported Rise by BLOOM is an algae-blended resin containing algae biomass and bio-based additives, with renewable content of at least 45%, offsetting a significant portion of traditional EVA in footwear foams