I'd agree with previous posts about cotton fabric but if it's even slightly loose weave it's going to leak through no matter what kind of fabric it is. If the bibs are getting wet low on the legs (shin area) from auger blade wash you can try waxing the fabric as is done with heavy canvas brush chaps. Look around for the stuff (upland hunting clothes suppliers)or in a pinch you can use Johnson's paste wax. Apply to the needed area lightly, rub in some with a clean rag then heat gently with a hair dryer, repeat. A pain in the butt and a little messy, and you won't want to put the bibs in the washer with regular clothes or over do application so as to bleed through too much wax into underlying insulation put it's likely the most effective and longest lasting treatment you can use directly on the existing garment. I think before I'd jazz around like that I'd try faceing with some impermeable material like waterproof tent fabric, slip over gaitors or as mentioned previously put em away for other use and get youself a new pair of bibs made for use on the ice.
Spin
