Timberland Womens Earthkeeper Radler Trail Boot Orange/Red/Maroon Synthetic Shaft measures approximately 8" from arch 100% PET (recycled plastic bottles) upper for lightweight comfort and durability Upper is treated with ion-mask technology by P2i to shed water Zip-together design for extreme packability 100% recycled PET lining is comfortable, breathable and eco-conscious 400 grams of Primaloft insulation