ULTRA-LIGHT INSULATED PERFORMANCE: Built for fast-paced routines and minimalist carry, the Microlite 350 Flip delivers full vacuum insulation in a featherlight 0.6 lb design—ideal for commuting, travel, or everyday hydration. 12 HOUR HOT / 24 HOUR COLD: Advanced double-wall vacuum insulation keeps beverages hot for up to 12 hours and cold for an impressive 24, so your coffee stays piping and your water ice-cold all day long. FLIP-TOP CAP WITH LOCKING LID: Leak-proof, push-button flip cap provides secure, one-handed access and a locking mechanism to prevent accidental spills in bags or cupholders. RUGGED & COMPACT BUILD: Crafted from BPA-free 18/8 stainless steel with a sleek 2.9 in. diameter, this 12 fl. oz. bottle is cupholder-friendly, pack-ready, and tough enough for everyday adventure. GSI OUTDOORS – INNOVATION FOR EVERY ADVENTURE: Since 1985, GSI Outdoors has been designing rugged, reliable gear that elevates outdoor cooking and dining for campers and hikers, inspiring explorers to enjoy great food and memorable moments in nature. GSI Outdoors products are covered by a Lifetime Warranty against material and workmanship defects.