【Reinforced Stainless Steel Rim】The cup mouth features strengthened stainless steel edging , solving easy deformation and squeezing issues of silicone cups , ensuring stable grip and less spilling , maintaining the cup’s three dimensional shape for a long time 【 Safe Silicone】Made of odorless silicone for safer use , with a sealed dustproof lid that effectively blocks dust during storage and keeps the inside clean 【Ultra Slim Foldable Portable Design】This 6 oz cup can be compressed to a thin 3.2 cm shape , easy to store in pockets or bags without taking space , an essential lightweight item for travel and outings 【Wide Temperature Resistance】Strong weather and temperature resistance , adaptable to environments from -40°F to 392°F , suitable for washing , taking medicine , drinking water and other scenes , practical and versatile 【Easy Cleaning & Portable】Comes with a lanyard for easy carrying , smooth interior resists stains , supports dishwasher cleaning , making outdoor cleanup simple and effortless