The Pas Normal Studios Mechanism Thermal Jacket packs a lot of features and tech. The jacket is made from a three-layer fabric, with a Windtex Pro membrane and DWR treatment. However, this DWR treatment is more proficient than many, giving the Mechanism Jacket a waterproofing score of 10,000mm water column pressure. Most water-resistant jackets are around 5,000mm, while heavy-duty waterproofs and ski gear are typically 20,000mm. This jacket also features a high level of water vapour transfer, promising to make it highly breathable. Additional weatherproofing comes from the ultrasonic welded, internally taped seams.