Our ultralight 15 denier  ripstop polyesterMEMBRANE 15 Like other fabrics in the MEMBRANE line, M15 RS combines breathability, wind/water resistance, and exceptional downproofing with thesoftest hand feel on the market.

To make MEMBRANE 15, we start with a custom  woven, high thread-count polyester base material. Then we add a micro gridripstop  for improved abrasion and tear resistance. 

Combined with a DWR (Durable Water Repellent) coating, the result is a durable, ultralight fabric withsignificantly less  weight gain  and improved comfort  (i.e. no clammy feeling) when subjected to rain or highly humid conditions. 

All this makes MEMBRANE 15 ripstop excel in a variety of applications including  quilts, jackets, sleeping bags, garments, linings, and more.