Sharkskin&';s legendary Chillproof material has been embedded with nanoparticles of titanium that capture and retain significantly more body heat. The inner layer features a "hollow yarn" fleece that holds and warms water next to the skin while in the water. The middle technical layer is a one-way membrane that regulates body temperature on the surface by keeping out wind and water but allowing water from the inner layer to wick rapidly away from the body. The new, updated outer layer is a nylon/spandex blend with exceptional four-way stretch, is abrasion resistant and has a water-repellent finish that sheds water. New titanium colored outer fabric to regulate heat better More robust outer fabric for increased resistance to abrasion More flexible than the original titanium chillproof for a better fit New &';body mapping&'; technology used to improve fit Sizing Guide WOMENS AU 6 8 10 12 14 16 18 20 22 U.S 00 02 04 06 08 10 12 14 16 EU XXS XS S M L XL XXL 3XL 4XL HEIGHT 57.9" - 61" 60" - 63" 62" - 65" 64" - 66.9" 65.9" - 69.1" 67.9" - 71.1" 69.9" - 73" 72.2" - 75" 74.2" - 77" WEIGHT 101lb - 115lb 115lb - 128lb 128lb - 143lb 143lb - 159lb 159lb - 174lb 174lb - 192lb 192lb - 214lb 214lb - 236lb 236lb - 258lb BUST 28.7" - 31.1" 31.5" - 33.9" 34.3" - 37" 37.4" - 40.2" 40.6" - 42.9" 43.3" - 46.1" 46.5" - 48.8" 49.2" - 51.6" 52" - 54.3" WAIST 20.5" - 22.4" 22.8" - 25.6" 26" - 28.3" 28.7" - 31.5" 31.9" - 34.3" 34.6" - 37.4" 37.8" - 40.2" 40.6" - 42.9" 43.3" - 45.7" HIPS 30.7" - 33.1" 33.5" - 35.8" 36.2" - 38.6" 39" - 41.7" 42.1" - 44.5" 44.9" - 48" 48.4" - 50.8" 51.2" - 53.5" 53.9" - 56.7" The Sharkskin size charts are made to be accurate for the type of fit you need for each garment. Provided that you measure your body accurately then you will get the very best estimate for size. VIDEO GUIDE TO HELP YOU WITH THE BEST FIT Under a wetsuit - if you are wearing Sharkskin(TM) underneath a wetsuit then you will need to make sure your Sharkskin(TM) garment is 'fitted&'; so that it is firm on your body and does not bunch underneath your wetsuit. In and out of the water - if you are wearing Sharkskin(TM) by itself (not under a wetsuit) and are fully submerged or 'in and out&'; of the water (EG - 'in and underwater&'; watersports like SCUBA diving and snorkeling, and also general watersports where you are 'in and out&'; of the water like surfing, foiling, wake boarding, kiteboarding, windsurfing, performance sailing, etc) then it is also best to make sure your Sharkskin(TM) garment is more 'fitted&'; than loose. Out of the water - if you are wearing Sharkskin(TM) as a standalone garment out of the water 100% of the time (EG - SUP boarding, surfski paddling, recreational kayaking, snow skiing, sailing, as thermal wear for mountain biking and other outdoor activities, etc) then you may be more comfortable with a slightly looser fit to allow for better torso rotation and flexibility. Sharkskin Rapid Dry rash shirts - the exception to wearing Sharkskin(TM) 'fitted&'; is the Rapid Dry range. Rapid Dry is designed to be worn slightly loose like your favorite T shirt. FIT TIPS - To ensure a looser fit then size up or choose the higher end of the sizing scale when comparing your body measurements to the size chart. To ensure a tighter / firmer fit then do the opposite.When putting Chillproof or T2 Chillproof garments on do the zipper up at the narrowest part of your waist and then pull the top down towards your hips. Once pulled down then continue to pull the zipper up, (per the video demonstration).You may need a different size top and bottom - so please measure both top and bottom measurements rather than choosing the same size automatically.If you&';re tall and thin you are best to maintain a firmer fit even if it&';s a bit short in arms and legs. AUS/U.S/EURO 6/00/XXS 8/02/XS 10/04/S 12/06/M 14/08/L 16/10/XL 18/12/XXL 20/14/3XL 22/16/4XL CHEST 28.7" - 31.1" 31.5" - 33.9" 34.3" - 37" 37.4" - 40.2" 40.6" - 42.9" 43.3" - 46.1" 46.5" - 48.8" 49.2" - 51.6" 52" - 54.3" SLEEVE LENGTH 23.4" - 24.2" 24.4" - 25.2" 25.4" - 26.2" 26.4" - 27.2" 27.4" - 28.1" 28.3" - 29.1" 29.3" - 30.1" 30.3" - 31.1" 31.3" - 32.1" SHARKSKIN&';s new Titanium 2 product range offers outstanding thermal protection tested equivalent to 5mm neoprene and can be worn as your primary exposure protection in waters down to 68Adeg F (20Adeg C). Titanium 2 Collection