Breathable Comfort & Safe Materials - Both the baby car seat head support and Car Seat Strap Pads are made of breathable mesh fabric with high-density sponge and natural cotton filling, which is sweat-absorbent and breathable to ensure all-around comfort in all seasons. And they are suitable for newborn and infant Ergonomic Design - The Thickened Car Seat Head Support reduce bumps and friction during the journey. The 2pcs Car Seat Strap Pads feature a hook-and-loop design for easy attachment to the harness, effectively dispersing pressure and preventing chafing. Together with the infant car seat insert, they deliver ergonomic, all-around stability for the baby's head, neck, shoulders, and back, which meets the baby's needs for comfortable journey Universal Compatibility - The hook-and-loop design on the shoulder pads allows for quick and secure installation without complicated threading. The entire set (baby car seat head support & Car Seat Strap Pads) is designed for 3-point or 5-point baby car seats, strollers, baby carriers, cradles and other baby products. And it's compatible with major brands like Doona, Graco, Baby Trend, Evenflo, etc. 2-in-1 Design & Anti-slip Design - The Breathable infant car seat insert can be used standalone in two modes: cushion or pillow. This baby car seat head support adjusts to your baby's height, ensuring a perfect fit at every stage of your baby's growth. The back of the infant car seat insert has an anti-slip function, which can effectively fix itself on the car seat Easy to Clean - The newborn carseat insert well blocks urine, loose stools, debris and other liquids from penetrating into car seats or strollers, preventing odors and difficult-to-clean stains. The baby car seat head support & Car Seat Strap Pads is easy to disassemble, easy to clean, machine washable at low temperatures Packaging include: 1x infant car seat insert, 2x Car Seat Strap Pads Thickened Car Seat Head Support with 2pcs Car Seat Strap Pads Compatible with Doona Infant Insert, Breathable Newborn Carseat Insert, Universal Baby Car Seat Cushion