High Quality Stainless Steel Material: Gingprous 14 oz stainless steel tumblers made from unbreakable 304 18/8 food grade stainless steel, these insulated wine glasses are durable, lightweight, lead-free, non-breakable and easy to clean. Double Wall Vacuum Insulation: Gingprous 14 oz stainless steel tumblers wine glasses feature double-layer vacuum insulation technology, travel tumbler with double wall insulated design keeps your drinks cold for 9 hours or hot for 5 hours, always giving you the best temperature. Multifunctional: Gingprous 14 oz stainless steel tumblers with lid and straw, suitable for storing any beverage, such as coffee, wine, beer, water, juice, cocktails, etc. It is ideal for your family, camping, holiday, sports and travel. Suitable Use: Suitable for all beverages, indoor or outdoor. Ideal for swimming pools, front porches, beaches, parties, lakes, patios, picnics, barbecues, camping, cruising, work, travel, boating.  Travel Tumbler Set Features: 1. Double- layer stainless steel can ensure long-lasting constant temperature. 2. BPA free lid. 3. Excellent for all drinks! 4. The silicone material on the top of the straw is anti-scald and safe. 5. Easy to clean. Various Application Ways: The stainless steel travel tumbler is suitable for wine, beer, cocktails, champagne, water, coffee, tea, milk, juice and more. Great Gift:  Blessing your grandma with LiqCool ‘I Have Loved You My Whole Entire Life’ mug. Ideal as a birthday gifts, Christmas gifts, or Mother’s Day surprise, this mug will surely be a surprise grandma christmas gifts. Funny Travel Tumbler Specifications: Travel Tumbler Material: 18/8 food-grade Stainless Steel Color: Dark Green&Blue Size: 14 oz Packaged Included: 1 X 14 oz Grandma Mug 1 X Clear Lid 1 X Stainless Steel Straw 1 X Straw Brush & Sponge Brush 1 X Box Warm Notice: 1. Not microwavable. 2. It is recommended to hand wash with a non-scratched sponge. 3. Keep children away from the travel tumbler when it is filled with hot liquid.