Now crafted from certified 90 percent post-consumer recycled 18/8 stainless steel, Klean Kanteen's vacuum insulated TKWide line features TK Closure internal thread design and award-winning Climate Lock double-wall vacuum insulation for leading-edge thermal performance. TKWides are made for life with chip-resistant Klean Coat finish and five compatible low profile lids with easy-carry swivel loops.