Brace yourself: Winter is coming. Here's some scuba diving gear that will help you stay warm and safe when the thermometer falls. Check out our Editor's Picks for cold-water gear below. Want our latest gear reviews? Visit the Gear section of our website.

1. Spyderco Enuff Salt Dive Knife

Some dive knives get tough to hold onto when your gloved fingers are the size of a bratwurst. But the scaly texture of the Enuff Salt’s grip and the machined thumb grooves work to provide a sure hold for gloved or bare hands. Made of Spyderco’s H1 steel (which we’ve soaked in salt water without it rusting), it holds an edge even with rough use, and the heavily serrated blade rips through finger-thick nylon line with one pass. $179.95 spyderco.com

2. Hollis Neotek 8/7/6 Semidry Wetsuit

How low (in temperature, that is) a wetsuit can go depends on everything from body type to suit design and fit. But the Hollis Neotek semidry pushes that number as low as any wetsuit we’ve tried. The textured lining keeps water from shifting around inside, and a thick back pad keeps cold water far from your spine. Inside the horizontal chest zipper is an internal water dam that pulls over your head from the front before you pull up the hood from the rear. It requires a little tugging to get it into place, but the payoff is a glove-like fit that keeps you perfectly toasty. Available in nine sizes, the ruggedly made Neotek has sealed, blind-stitched seams. $449.95 hollis.com

3. Fourth Element Cyclone Jacket

Designed for divers, the Cyclone is a jacket made of a triplelayer material that’s waterproof and breathable, and can stand up to hard use in punishing weather conditions. The tough outer layer provides durable protection from wear and abrasion, the middle layer blocks water and wind from entering, and the inner layer adds insulation and allows moisture to escape. The shaped hood fits comfortably and has room for a hat underneath, and the seam-welded chest pocket has a water-resistant zipper. The hood and the cuff enclosures are adjustable, and the hand-warmer pockets have water-resistant zips. The Cyclone packs down small, so it’s handy for travel or for stowing on the boat or between-dive warm-ups. The Cyclone is available in men’s and women’s sizes. $220; fourthelement.com

4. Shearwater Perdix Dive Computer

The more challenging the dive conditions, the more you appreciate a dive computer that’s easy to read and understand. The multicolor display of Perdix, with a screen that’s 2.2 inches wide, offers a wealth of data in an uncluttered, clear presentation that instantly conveys critical info. For a computer with advanced tec capabilities, including open and closed-circuit modes with up to five gases and the ability to handle any blend of trimix, the Shearwater Perdix is as intuitive and simple to use as most basic recreational computers. (The OC Rec mode is a simplified three-gas nitrox computer that’s appropriate for beginning divers.) The two side-mounted buttons (which are nearly ¾-inch in diameter and easy to operate with thick gloves) work with clear, logical screen prompts to make quick work of predive setups. The Perdix lets you customize screen displays from a long menu of options, and the dive display toggles through a hefty selection of data, a color tissue-loading graph and a digital compass. The Perdix uses a single AA battery, which is quick and easy to replace. $849 shearwater.com

5. Zeagle Halo BC

The harness makes the Halo one of the most comfortable and secure BCs we’ve ever used, in part because of its wide range of adjustability, which lets you achieve that just-right fit whether you’re in a tropic-weight wetsuit or a bulky cold-water suit. Equipped with Zeagle’s Ripcord integrated-weight system, the Halo ditches both weight pockets with a tug of the single red release handle, which is secured with a hook-and-loop fastener to prevent accidental ditching. The Halo has plenty of room to stow oodles of accessories, with seven stainless steel D-rings, cargo pockets that are nearly 10 inches deep with long zippers for easy access, and twin mounting points for a knife or retractor. $773.95 zeagle.com

6. Aqua Lung Legend Glacia Scuba Regulator

The Glacia starts out with the Legend — long known for its easy-breathing reliability in the cold — and adds design elements that allow it to perform in even the most extreme conditions. It’s equipped with three radiator-like heat exchangers — in the first stage, the second stage and in the hose – to pull ambient heat from the water. The diaphragm cover is machined from solid aluminum, which helps to rapidly conduct heat. The Glacia’s purge is designed with a flow control to avoid excessive purging, which can cause unwanted cooling of the breathing air. The sealed-diaphragm first stage is equipped with Aqua Lung’s Auto-Closure Device that blocks water from entering the first stage. $840 aqualung.com

7. Akona 5mm Gloves

These gloves keep your hands warm and protected, without giving up dexterity. The palms and fingers are covered with ArmorTex, a material used in industrial protective wear that’s resistant to punctures or cuts but also extremely flexible. Seams are glued and blindstitched for a tight, water-resistant seal, and the fingers are pre-bent into an ergonomic shape so they flex more easily without binding, offering surprising flexibility for a 5 mm glove (they’re also available in 3 mm). The seals on the wrist are smooth, so they’ll form a tight seal whether they’re against neoprene or skin. $64; akona.com

8. Cressi ARA EBS Hard Blade

The Cressi ARA offers efficient power for demanding conditions, dive-all-day comfort and no-hassle convenience. The lively polypropylene blade has a pronounced snap that provides excellent thrust and momentum with minimal fatigue, and that works well with a wide range of kicking styles. Beefy side rails and grooves along the face of the blade channel water for efficiency and stabilize the fin to keep it kicking true. Much lighter than a steel spring strap, the bungee has a wide, soft heel pad and an oversize finger loop that’s easy to grasp with thick gloves. The ARA is also available in a Soft Blade version. $169.95 cressiusa.com

All dressed up with nowhere to go? Here are our favorite spots for cold-water diving.