Survival Suit
Armor: 1
Size: 6 L
Mass: 2.5 kg (5 kg with included gear and survival rations)
Duration: Unlimited with sufficient sunlight
Breathing Mask
Size: 1.2 L
Mass: 1 kg
Duration: 1,000 hours

All Starfleet cadets who participate in survival training use survival suits. Most remote Federation outposts and shuttlecraft also stock these suits. Survival suits are designed for use on Class M and Class L worlds, and can function on Class H worlds with the addition of the optional breathing mask. Personnel use environment suits when visiting less habitable worlds.

Made from one of the smart cloth materials first developed in the early 24th century, the fabric used in survival suits consists of electronically active nanofibers embedded in a tough dylec mesh. These nanofibers allow the suit's variable-state material to expand or contract in width and thickness. Survival suits adapt themselves to local environmental conditions. In arctic weather a survival suit serves as a warm, fully waterproof insulating garment capable of protecting the wearer from temperatures as low as -30°C. In humid jungles it becomes a cool, loose-weave fabric that shields the wearer from the sun, or a thin, cool, but completely waterproof garment like a windbreaker. Superconducting thermoelectric heating and cooling elements woven into the fabric allow the suit to keep wearers comfortable in temperatures ranging from -30°C to 50°C. To endure extreme temperatures safely the user must wear the hood built into the suit's collar.

The suit's nanofibers also allow the wearer to change the suit's color to one of nearly two dozen settings — from various forms of camouflage to heat-reflective silver or high visibility colors like bright orange and magenta. Thin film sarium krellide power cells built into the suit's fabric power its various functions. These power cells maintain all of the suit's functions for up to 200 hours. Solar cells bonded to the upper layer of fabric can recharge the suit's power supply.

Survival suits also come equipped with a wide range of additional gear, including powered binoculars, an MGE, a water purification unit, a dermal regenerator, a personal communicator, a powerful palm beacon, a dylec memory tent, and 1 kilogram (6 days' worth) of survival rations. Survival suits provide 1 point of armor for the wearer and self-seal punctures and tears of up to 3 points. Six tear-off patches allow the wearer to repair more serious damage.

On Class H worlds and on shuttlecraft emergency lockers survival suits also come with separate breathing masks. These serve the dual purpose of providing the wearer with a breathable atmosphere and recycling the moisture the wearer exhales, preventing dehydration in dry climates. A breathing mask consists of transparent kylar mask that automatically conforms to the wearer's face, and a miniature rebreathing filter/compressor unit that attaches to the survival suit belt. This rebreather extracts oxygen from any atmosphere or liquid which contains more than trace amounts of the gas. The rebreather unit is rated for 1,000 hours of continuous operation before its picotronic filters require cleaning and service. If necessary, a survival suit and breathing mask can even allow the user to operate for a limited time under water.