Kambukka’s Olympus travel mugs with Switch lid (available in 300 ml and 500 ml) offer effortless one‑handed use and a fully leak‑proof design. With a simple switch, the drinking opening clicks open, making it perfect for commuting, office days or life on the go. Looking for a travel mug with a Switch lid, an insulated 300 ml or 500 ml mug, or a reliable coffee & tea mug that opens with one motion? The Olympus range combines comfort, durability and outstanding heat retention.