Bubba 52oz DualSip Insulated Stainless Steel Water Keg with Built-In Straw and Drink Opening and Side Handle, Office Siren Black. Bubba Water Keg, 52 Oz, Stainless Steel, Vacuum Insulated Leakproof With Side Handle, DualSip 2-Way Lid, Office Siren. The bigger the bottle, the bigger the vibe. At 52 oz, this one-of-a-kind insulated water keg is made for major, all-day hydration. The super-stylish colors mean you'll want to take your keg everywhere, so we made carrying easy with a comfy side handle and easy-grip lid. The dual-function lid lets you choose your flow: flip to sip through the built-in straw, or twist open for a full-on chug. Drinks stay cold for hours thanks to dishwasher-safe, vacuum-insulated stainless steel, while the leakproof design keeps things spill-free—just twist and flip the lid shut, and you're good to go. P.S. this bottle and lid are made with lead-free and BPA-free materials.