Bstpower Spill Resistant and Splash Proof Lids with Slider Closure for YETI 30 oz. Tumblers Made by Eco-friendly BPA free & non-toxic materials,lightweight,durable, firm and enduring. Made for YETI rambler tumbler,and fits for RTIC,Ozark TrailsKodiak, SIC ,Simply ModernMarky and many more other cups also. Enable to close and open easily for a drink with slider closure. Great for rough riding in the boat, off raiding in your truck, ATV or in the field. 180 days money back and 1 year warranty.