Covid 19 spread between humans and deer, study shows, raising concerns Peter Storm 1998 navy W1 proofed wool rib waterproof army jumper S. Army jumper by british outdoor company peter storm (1998), in the 703 "Nato sweater" style. Made in dark navy, medium weight wool rib knit, the jumper has crew neck, fabric patches at shoulders and elbows, and ribbed cuffs and hem. It has been treated with peter storm's "W. 1 proofing", which "makes the outer membrane of wool completely waterproof" but "does not seal the pores in the outer membrane, and does not touch the absorbent core" (which means it should breathe as well as a regular (non waterproof) jumper). Good used condition, with minor wear (see pictures 9 10). Please note that although fibres surface of fabric is waterproof, water may still get through gaps in the knit over time. Size S (mens unisex) Check measurements to confirm fit All measurements taken flat Shoulder width: 38 cm Width (at underarms): 39 cm Length (neck to hem): 60 cm Sleeve length: 63 cm Hem width: 30. 5 cm 100% wool, with W1 proofing Made in great britain 1998 Read more about peter storm here.