A drysuit includes: a body suit formed of water impermeable material having a front portion, a back portion, a first side portion, a second side portion, a head opening, and an entry opening; one or more seals connected to the head opening and the entry; fastener connected to the entry opening; and one or more elongated panels of elastic material connected to and overlaying the first side portion, the second side portion, the front portion, or the back portion in a longitudinal direction for providing stretch to and compression to the body suit in a transverse direction; wherein the one or more panels of elastic material are smaller in area than the first side portion, the second side portion, the front portion, or the back portion. The drysuit provides stretch and compression at critical points of the drysuit for increased safety, fit, durability and adaptability to/for the user.

A technique for delivering heating or cooling to a diver includes a suit that includes a water-impermeable outer layer, an insulating layer having a channel extending along a diver-facing surface thereof, and a tube disposed within the channel of the insulating layer. The tube is constructed and arranged for carrying heat-transfer fluid to a proximity of the diver's skin.

A technique for delivering heating or cooling to a diver includes a suit that includes a water-impermeable outer layer, an insulating layer having a channel extending along a diver-facing surface thereof, and a tube disposed within the channel of the insulating layer. The tube is constructed and arranged for carrying heat-transfer fluid to a proximity of the diver's skin.