Faux Fur (Fur Origin: Not Applicable) Rubber sole Women's JSport By Jambu, Mary Rain Boot. The JSport By Jambu Mary Rain Boot is the perfect everyday rain boot. It features a simple, low-cut design and waterproof construction that keeps your feet perfectly dry. A memory foam insole provides extra cushioning while you walk, so you never know what adventures the day may bring. Waterproof rubber & nubuck upper with faux fur collar Front lace up closure Memory foam insole Rubber outsole