SNOW BIB Durable and warm, these rain-and-stain repellent winter bibs are insulated with 60 grams of naturally breathable and quick-drying polyester. GROWS WITH THEM They also feature our Outgrown™ grow system, which makes it easy to extend the length of the inseam as they get taller. OUTGROWN™ grow system Waterproof fabric Insulated, 60gsm Adjustable waist Waist adjustable tabs Reinforced cuff guard Internal leg gaiter Adjustable elastic suspenders