This pillow does not include a strap The blue band shown in the main image is a visual marketing element and not part of the product design Designed for side sleepers and pregnant women This leg divider alleviates knee and back pain supports hips and offers relief from sciatica and joint discomfort Ergonomic leg pillow ensures comfortable sleep by separating knees aligning the spine reducing pressure and staying in place all night Sized at 98L x 78W x 62H for custom support Premium memory foam contours to your knees legs and thighs Comes with a cooling soft breathable and antipill cover easily washable for hygiene Use the contour pillow between knees under the lower or upper leg between calves or beneath the knees for back sleepers Our orthotic pillow is designed to provide tailored support and universal comfort for side and back sleepers pregnant women the elderly and those experiencing postsurgery or injury pain The 5 Stars United sleeping pillow is OEKOTEX STANDARD 100 and CertiPUR certified ensuring a safe and sustainable choice for you HSA and FSAapproved Offer the gift of comfort and health with this knee rest pillow perfect for back and side sleepers postknee surgery recovery and expectant mothers