The Sea to Summit Aeros Pillow Premium Large is a high-performance inflatable pillow designed for lightweight backpacking and camping. It features a luxurious 50D brushed polyester stretch knit outer shell that is soft against the skin, while a high-strength TPU bladder provides durable support. The internal construction includes curved baffles that create contours to cradle the head, and a scalloped bottom edge that centers the pillow around the shoulders. It is equipped with a multi-function mini-valve for rapid inflation, deflation, and fine-tuning of air pressure. This pillow is also compatible with the Sea to Summit Pillow Lock system to prevent slipping on sleeping mats. Technical Specifications: Weight: 114g (4 oz). Inflated Dimensions: 42 x 30 x 13 cm. Packed Size: 8 x 10.5 cm. Materials: 50D brushed polyester stretch knit and TPU.