The old design Long Hot Water Bottle inserts are made from PVC, while our new boxed, rolled Long Hot Water Bottles and new Long Hot Water Bottle designs are made from rubber. Old designs with bottle made from PVC: Grey Fur, Pink Fur, Cream Fur, Grey Nordic, Navy Knit, Cream Knit, Burgundy Fleece, Pink Fleece, Taupe Fleece, Purple Chevron, Purple Tartan, Blue Tartan, Blue Stripe, Purple Stripe, Red Stripe, Red Spot New designs with bottle made from rubber: Blue Fur, Vanilla Fur, Blush Pink Fur, Marshmallow Grey Fur, Mocha Fur, Slate Fleece, Cranberry Fleece, Clay Fleece