NWT Sorel Ona RMX Waterproof Puffy Strap Bootie. Size 9. Color: Black/Sea Salt. A dusting of snow is all the excuse you need to enjoy the waterproof comfort of this sneaker-style bootie with a grippy tread and cute puffer strap. - Waterproof: protects against rain, puddles and slush to keep feet dry in wet conditions - 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 - Textile upper and lining/rubber and synthetic sole - True to size.