DOUBLE-WALL VACUUM TECHNOLOGY: Our tumbler adopts double-wall vacuum technology, sweatproof, can keep water warm for 9 hours and keep cold for 12 hours, so you can drink ice water in summer and hot water in winter.
Made of 18/8 food-grade stainless steel, strong and not easy to rust.
UPGRADED STRAW LID: The sublimation water bottle with upgraded straw lid, has anti-spill valve and thickened sealing ring to prevent leaks. Straw mouth can be folded to prevent dust from entering, hygiene and easy to sip. Also equipped with a portable handle, which makes it easy to carry.
