The British Army developed the snow camo oversmock and trosuers in 1942 along with the lighter weight windproof suits. All of these items remained in MOD inventory until the early 1990's. Our white camo oversuit is a faithful copy of the original in 100% cotton gaberdine. You should order a size that is 10-12 inches LARGER than your actual chest and waist measurements to get a proper fit for wear over a winter uniform.