The mug press sublimation machine features a non adjustable heater, you can use sublimation silicone wraps help you. Just use the proper thickness one or 2 pieces silicone wrap to wrap around the tumblers or mugs, then insert it into the mug press heat plate and .3 Pieces different thicknesses silicone wrap: 0.06 inches, 0.14 inches, 0.18 inches; The silicone mug tumbler wrap is L 9.8 inch x W 4.7 inch. sublimation silicone wraps are designed for mug press sublimation machine. Made of premium silicone.The silicone wraps are easy to use. Use the proper thickness one or two pieces silicone wrap to wrap around the tumblers or mugs, then Insert it into the mug Press heat plate and .0.15 CM: For 7.7-8 CM sublimation tumbler mug bottle, such as 12 sublimation enamel mug with stainless steel rim; 0.35 CM: For 7.4-7.6 CM sublimation tumbler mug bottle, such as the 20 600 ML sublimation aluminum water bottle; 0.45 CM: For 7.1-7.4 CM sublimation tumbler mug bottle, such as 12 16 sublimation skinny tumbler,12 sublimation kids bottle.size: Thickness about 0.15 / 0.35 / 0.45mm, length 25cm, width 12cmMaterial: Silica colour: greyPackage Contents:1 set x mug press(3 Pcs)Only the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.