Hi-res stands for Hi water Resistance and Hi Respiratory functions. SW4L stands for 4-layer fabric with a highly breathable and waterproof Hydrophilic Monolithic membrane.
4L explains that the fabric consists of four layers that have been laminated together with the Hi-Res Hydrophilic Monolithic membrane sandwiched between a durable outer material and a knitted or woven backin. Our garments are made in Hi:RES 2X2 SW4LTM STRETCH MEMBRANE with its 4-way stretch offers a great Comfort and freedom of movement. It allows perspiration to escape, yet prevents water and wind from entering.