The Stack Growler is a portable drink-ware set designed for traveling outdoors. The product features a double wall stainless steel body with vacuum insulation to keep 64 ounces of any beverage hot or cold for up to 48 hours. The threaded collar locks four stackable cups secure during transport.

The product was designed for Manna Hydration in 2017 to target the outdoor market, and later released at the Outdoor Retailer show in 2018. The Stack Growler continues to be sold by retailers and licensed to a selection of outdoor brands, such as the Hunter Boots x Target collaboration.