This insulated stainless steel tumbler combines functionality and upgraded design into a high quality travel tumbler. The Trek Tumbler Signature is constructed with a durable double-wall insulated stainless steel exterior that keeps drinks ice cold for hours. With a new ceramic-lined interior, enjoy the pure flavor of your favorite drinks without any metallic aftertaste. The leakproof lid is designed with push-lock technology - simply push the silicone straw down to lock into place or pull when you’re ready to sip. The flexible silicone straw and paired plastic straw is BPA-free and is removable for easier cleaning. Comfortably travel anywhere with the ergonomic carry handle, cupholder friendly base and new silicone grip bottom.