The Straw Cap for YETI Rambler Bottle and RTIC Bottle is a reusable, modern-style lid with a round shape and a capacity of 1.6 pounds. It is made of BPA-free Tritan material and is designed for both hot and cold drinks. The lid comes with 2 straws and features a leak-proof, break-resistant, and dishwasher-safe design. It is suitable for travel and home use, making it a convenient and durable option for adults on the go.