All / Accessories All Willow Pump Bags and Cases Coolers Accessories Willow - Sizing Insert Set (2-pack) $23.99 Select Size 13mm 15mm 17mm 19mm Add To Cart Willow Go Container Duckbill Valves, 2 Pack $24.99 Add To Cart Willow Go Pump Diaphragms, 2 Pack $24.99 Add To Cart Willow Go, Container Accessory Kit $49.99 Select Capacity 5oz 7oz Add To Cart Willow Go, Flange Accessory, 2 pk $44.99 Select Size 21mm 24mm 27mm Add To Cart Willow Go, USB Charging Cables, 2 Pack $29.99 Add To Cart Willow, USB Dual Charger Brick $19.99 Sold Out Add To Cart