RDSL 30 oz Insulated Stainless Tumbler

All-day session fuel engineered for the long haul. Double-wall 18/8 food-grade stainless vacuum insulation keeps coffee piping hot across an 8-hour shift or ice solid past 24 hours, completely eliminating condensation rings on your bench or console. The bare, brushed raw stainless chassis shrugs off shop-floor wear—no exterior paint or powder coat to scratch, burn against a soldering iron, or peel from bench solvents. Features our full-length psychedelic line-wave seal permanently fiber-laser etched in our Mahomet, IL shop and a splash-resistant friction lid with a heavy-duty silicone seal. Built for engineers, techs, and builders who stay locked into the work.