Soto Thermostack Cook Set Combo Lightweight Backpacking Cookware Amazon.com : SOTO Thermostack Camping Cooking Set Multi Functional Soto Thermostack Cook Set Combo SOTO Thermostack Combo Walmart.com SOTO Thermostack Combo Cook Set Outsiders Store UK. SOTO's Thermostack Combo Cook Set is an extensive, ultralight, 8 piece cooking set for up to 2 campers. It includes two cups (titanium and stainless steel) which together create an insulating cup and an aluminium pot with a capacity of 750 ml. The pot is anodized, not coated, which makes the surface of the pot extremely durable and prevents the food from sticking. A separate insulating sleeve for the large pot keeps meals warm longer. Mixing, cooking, measuring, drinking: the Thermostack Combo ensures comfort, even while on tour where every gram counts.