Sip Sustainably! 🌍 Rustproof stainless steel with ergonomic design for on-the-go convenience. Constructed from 90% recycled, BPA-free materials for sustainability. Dishwasher safe for hassle-free maintenance. Splash-proof lid with two modes for sipping or direct drinking. Advanced insulation keeps drinks hot for 8h and cold for 12h. 8h hot retention 12h cold retention 90% recycled material The WALLFID 40oz Tumbler is a premium stainless steel vacuum insulated cup designed for both hot and cold beverages. With advanced insulation technology, it keeps drinks at the perfect temperature for hours. The tumbler is dishwasher safe, eco-conscious, and features a versatile lid for easy sipping. Perfect for the modern, on-the-go lifestyle.