Don't be that dude shivering in the lineup equip yourself with the O'Neill Men's Heat 3Q Zip FSW 43 Full Wetsuit. Ideal for late fall or early spring east and west coast surfing, the Heat comes packed with 43mm UltraFlex DS neoprene fabric for warmth, stretch, and flexibility, with UltraFlex Firewall chest and back panels for an extra boost of insulation. O'Neill engineers also gave the Heat fluid seam weld construction which uses a silicone based urethane seal to block out water without feeling uncomfortable or restricting movement. The Heat's strategic seamless paddle zones and Sidewinder S Curve seams further enhance flexibility while its Lumbar Seamless Design LSD features a large panel in the rear area of the wetsuit to minimize water entry and maximize stretch, particularly when you're sitting on your board. The Covert Code Red back entry uses a 34 length urethane coated zipper to keep water from entering, while a double Super Seal neck offers tons of adjustability, stretch, and soft comfort. Krypto knee pads improve durability and freedom of movement, and an external key pocket with loop ensures your car or hotel key doesn't end up swimming with the fishes.