Is the TAP bottle insulated? October 04, 2021 20:15 Updated The Stainless Steel TAP 20oz bottles are insulated to keep beverages cold. Related articles Can I put the TAP bottle in the dishwasher? Can I add ICE to my Tap bottle? Can I use TAP with carbonated or pulpy beverages? What sizes are the TAP bottles? Do TAP bottles fit in car cupholders?