Worked very nice. I wore under Whites 200 weight that I got with my Suit. I went from cold in a dry suit to toasty warm. The Tilos is nice and thin so it is easy to use as a layer or alone in warmer waters. My dive was only 35 min but the temp was low 40's and I stayed warm throughout.
I dove only with the undergarments supplied by Whites a few times and was chilled. I made a good purchase here.
Hope this helps.
Did you dive ONLY the Tilos in 40's water?
Phil Ellis
Discount Scuba Gear at DiveSports.com - Buy Scuba Diving Equipment & Snorkeling Equipment