Classic transparent double-layer style with pre-drilled hole for DIY decoration using glitter powder, mica, peridot chips, or polymer clay shapes. Made of food-grade PC material, non-, lead-free, odorless, and , offering greater toughness compared to glass tumblers. Flip top lids fit most car cup holders, making it easy to carry with excellent leak-proof performance. Double-walled vacuum structure keeps drinks warm for a long time without condensation on the . Comes with a small silicone stopper to seal the pre-drilled hole in the bottom, preventing spills.