Sharkskin Womens Titanium 2 Chillproof LS Full Zip Top

Quick answer: The Sharkskin Titanium 2 Chillproof Long Sleeve Full Zip Top is a women's thermal top built from Sharkskin's three-layer Chillproof fabric, embedded with titanium nanoparticles that Sharkskin says capture and hold significantly more body heat. It comes in US sizes 00 through 16, which Sharkskin maps to EU XXS through 4XL.

Why bigger divers look at it

The full zip makes a close-fitting thermal top far easier to get into and out of, especially wet. Sharkskin publishes a complete chart for every size: at US 16 (EU 4XL), that's 236 to 258 pounds, a 52 to 54.3 inch bust and a 43.3 to 45.7 inch waist. Titanium 2 is more flexible than the original, with body-mapping technology for a better fit.

How the three layers work

Hollow-yarn fleece inside holds and warms water against your skin. A one-way membrane in the middle blocks wind and water on the surface while wicking moisture away. The outer layer is an abrasion-resistant nylon and spandex blend with four-way stretch, a water-repellent finish and a new titanium color that Sharkskin says regulates heat better.

What you get

• Titanium 2 Chillproof three-layer fabric
• Long sleeves and full front zipper
• Windproof, wicking one-way membrane
• Abrasion-resistant, water-repellent four-way stretch outer
• Body-mapped fit

Options

• Sizes: US 00, 02, 04, 06, 08, 10, 12, 14, 16 (AU 6-22, EU XXS-4XL)

Before you buy

Compare your bust and waist with Sharkskin's chart. Under a wetsuit, Sharkskin says the top should fit firmly so it doesn't bunch. Pair it with the Titanium 2 Chillproof Long Pants. More options: Extended-Size Wetsuits, Drysuits & Dive Apparel (XXL and Up).