TBF Yeti LowballThis Custom TBF Rambler 10 oz Lowball is made from durable stainless steel with double wall vacuum insulation to protect your hot or cold beverage at all costs These Ramblers come standard with the YETI MagSlider Lid, the only drink lid that uses the power of magnets to keep your water, beer, or favorite drink on lock While the MagSlider Lid adds a barrier of protection for keeping drinks contained and preventing heat or cold from escaping, Please