Feeding support pillows A, B, C, and D are scientifically designed and carefully selected to protect your baby. Please refer to the promotional images for each model. They feature grooves to protect the spine and prevent head shape issues, creating a healthy feeding environment for your baby and giving mothers peace of mind. These baby sleeping mats, models A, B, C, and D, are made with antibacterial fabric to protect your baby's delicate skin. The sloped design prevents spit-up and protects the spine. The center groove effectively prevents head shape issues. The high-resilience foam core provides excellent support. The X-90° six-sided three-dimensional hollow structure with over 1,000 ventilation holes creates a microcirculatory system to keep your baby comfortable. The sloped design of these feeding pillows, models A, B, C, and D, naturally promotes burping, reduces the risk of vomiting, and protects spinal development. The ergonomic shape and design prevent choking, ensuring a more stable feeding. Feeding while lying down naturally promotes burping, protects the spine, and prevents choking, giving mothers peace of mind. Selected antibacterial materials effectively inhibit bacterial growth, giving mothers peace of mind and a healthy baby. The slope design prevents spitting up and protects the spine; the groove design prevents head shape problems; the high-rebound sponge core + breathable system creates a healthy and comfortable environment You can't go wrong with these baby feeding support pillows, models A, B, C, or D. Scientifically designed and built to last, they evenly distribute head pressure, preventing flat or pointed heads. Combined with a spit-up prevention function, they offer multiple benefits: comfort for baby and peace of mind for mother.