Reactor Thermolite Liners or screw it onto standard

or screw it onto standard disposable bottles (28mm thread)

Low profile design feels great in your hand

wide field of view—wider than their predecessors

lightweight

Reactor Thermolite Liners or screw it onto standardThe Sea to Summit Reactor Plus Thermolite Compact Liner. Increases sleeping bag performance by up to 20 F (11 C) with dual weight Thermolite fabric. Our regular 80 g m2 is combined with panels of 110g m2 Thermolite in the core body and foot box areas adding extra warmth, while the ergonomic design shaves off excess weight. Ideal for gram counters under 6 feet tall. FEATURES OF THE SEA TO SUMMIT REACTOR PLUS COMPACT LINER Lighter weight, more packable