>>1942437wool is one of the least weight-efficient materials commonly used. here are some insulation values per material weight:
Cotton .04 clo/oz
Merino wool .084 clo/oz
Polartec 100, 200, 300 series, Classic micro .16 clo/oz
Polartec Thermal Pro high loft Extreme .210 clo/oz
Thinsulate 0.33 clo/oz
Thinsulate Ultra 0.39 clo/oz
Primaloft Eco, .68 clo/oz.
Down (550 fill) .70 clo/oz
Climashield Apex, .82 clo/oz
Coreloft, .82 clo/oz.
Primaloft One, .92 clo/oz.
Down (625 fill), .92 clo/oz.
Down (800 fill), 1.68 clo/oz.
Down (850+ fill) 2.53 clo/oz.
yeah, wool doesn't lose all its warmth when wet like down does. but it still loses about half, where as climashield loses 10% at most