squishbags Press Screen Bags rosin squish bags tech screen tea bag mesh screens mash extractor tools 2.5″ x 4.5″ Bags – 90 micron – 50 pack 100% Nylon, Food Grade, Dye-FreeResistant to heat (up to 428°F/220ºC)Inside-Out stitchingDurable, Washable, ReusableEach pocket will hold 15-25g. For best results, aim for 1000-1500psi per square inch and limit each bag to 25g of material. For less than 15g of material, bags can be cut or folded. Squish Bags are designed to withstand heat and pressure. The softening point of the material is 374°F (190ºC). The melting point is 428ºF (220ºC), but for best results, we recommend 180-240ºF (82-115ºC).