The Boulder Gear Boy's Cooper Insulated Bib will withstand any adventure he endures this winter season. This insulated bib is made with waterproof and breathable BG Ultracore™ fabric with lightweight polyester insulation that ensures your little one stays cozy and warm. This bib features critically sealed seams that lock in heat, a zippered cargo chest pocket, articulated knee design for increased freedom of movement, and lower leg snow cuffs to keep unwanted snow out. Additionally, this bib features an adjustable waistband and Grow Cuff technology that gives you the option of extending the leg length to grow with your little one. The Boulder Gear Boy's Cooper Insulated Bib is the snow pants you've been looking for!