Extra Wide 4"" Thick Sleep Support: This self-inflating pad is extra wide and thick to keep you off uneven ground and hard rocks. Egg-shaped air cells and built-in pillow support your body and neck for balanced comfort. 40D Nylon Tpu Construction: Made of durable 40D nylon and Tpu material, resistant and easy to clean, ensuring comfortable sleep in rough outdoor environments. Quick Inflate Deflate: Features built-in foot pump, inflate in 30-60 seconds by pedaling, no mouth or hand inflation needed. Deflates in 1 second with air release valve design preventing air leakage. Ultralight Portable: Weighs and sizes like a water bottle, inbuilt pillow eliminates extra carrying. Fits easily in backpack for hiking, camping, backpacking, traveling, climbing and outdoor activities. Connectable Design: Side buttons allow connecting two pads to make double bed for comfortable wide sleeping, great for camping with friends and family, different colors on each side. 79 x 27.5 x 4 In