an outer shell;

a head mount, configured to conform to a head of a wearer; and

a plurality of connectors formed from an elastomer, each of the plurality of connectors provided between the outer shell and the head mount and each of the plurality of connectors connected to the outer shell and head mount;

wherein the connectors are configured to suspend the head mount within the outer shell such that, in use, an air gap is provided between head mount and the outer shell;

the connectors each have a first connection point connected to the outer shell and a second connection point connected to the head mount;

at least one connector of the plurality of connectors comprises a pair of limbs that are curved when there is no load on the at least one connector, and the limbs are configured such that, under tensile loading between the first and the second connection points below a threshold, the limbs straighten, and above the threshold, the limbs elongate by stretching of the elastomer;

when there is no load on the at least one connector, each limb of the pair of limbs is curved such that each limb of the pair of limbs has a convex curve and a concave curve on opposing sides of the limb, and the concave curve of a first of the pair of limbs faces the concave curve of the second of the pair of limbs forming opposed concave curves of the pair of limbs;

and a part of the at least one connector comprising the second connection point is located in an interior of a space defined by the opposed concave curves of the pair of limbs.