We built the original Timberland® waterproof "yellow" boots in 1973, but it's those who've pulled them on year after year who've made them into an icon. These boots are made with PrimaLoft® ECO insulation and responsibly-sourced Better Leather. Wondering about sizing? We recommend buying boots a half size down from your normal size. So if you're usually a size 11, order a size 10.5 Better Leather from a tannery rated silver for its water, energy, and waste management practices Seam-sealed construction Padded collar for a comfortable fit around the ankle 100% nylon laces 400 grams of PrimaLoft® insulation Rubber lug outsole 3/4-length, leather-lined anti-fatigue footbed