Our silicone masking plugs are a perfect fit for masking 30 ounce tumblers like Yeti, RTIC, Ozark Trail and others. Our plugs are reusable and can withstand 400F degrees. Dimensions: 4.055" x 3.267" x 1.535" Quantity: 1 Plug *RTIC CUP NOT INCLUDED* Froo www.froo.com | Froo Cross Sell, Free Cross Sell, Cross promote, eBay Marketing, eBay listing Apps, eBay Apps, eBay Application