The Ultimate Wool Mattress Topper creates a natural sleeping surface on top of a synthetic mattress. This soft quilted topper is ideal for sleepers who like a deep, plush pillow top. Overview Wool is the most breathable of all bedding materials, making it ideal for a mattress topper. Each mattress topper is hand-crafted with Premium Eco-Wool batting, tufted between two layers of organic cotton fabric. It is designed to lay flat on top of a mattress without shifting. Features & Benefits: Approximately 2.5-3 inches thick Premium Eco-Wool batting Organic cotton fabric cover Handmade in Washington state Size Options: Twin (38" x 75") 8.5 lbs Twin XL (38" x 80") 9.0 lbs Full (54" x 75") 11.9 lbs Queen (60" x 80") 14 lbs King (76" x 80") 17.8 lbs California King (72" x 84") 17.8 lbs