- Ultra-durable food grade Nylon 66 inner is BPA free
- Fitted, ThermoSkin non-absorbing insulation sleeve
- Patent-pending Protex hex pattern base
- Leak proof sipping lid
The Sea to Summit Delta InsulMug features a ground-breaking advance in thermal insulation: a molded non-absorbing closed-cell ThermoSkin. These lightweight Mugs feature Sea to Summit’s patented Protex™ hex pattern base, reducing weight and dispersing surface temperature. A snug-fitting, self-draining lid allows drip-free sipping. Excess liquid flows back into the sipping hole because of the concave design of the lid. Ideal for expeditions, camping and daily commuting.
Proper Use: Delta products should not be used in a microwave