To ensure successful transfers, sublimation shrink wraps must be carefully matched to the dimensions of your substrate to provide the consistent pressure required for full-wrap, edge-to-edge designs. These sleeves are highly compatible with various heat-resistant materials, including ceramic mugs, stainless steel tumblers, and glass bottles, provided the items can withstand convection oven temperatures between 300°F and 338°F. For optimal performance, utilize a professional-grade convection oven or a dedicated sublimation oven rather than a traditional heat press to accommodate irregular shapes and allow for efficient batch production. At Joto Imaging Supplies, we recommend using high-quality PET-based shrink film to guarantee superior thermal stability and a seamless, vibrant finish across all your customized drinkware.