Could you share the link or shop where I can purchase the neoprene neck seal? I would like to try it out.
Hi j0rd1 - I got the neo seal from here in Australia:
Waterproof Neoprene Neck Seal - 3mm - The Scuba Doctor Dive Shop
Seen them here in US as well as in other places.
Neoprene Neckseal-XL/2XL
I found these size charts to be useful, although you may want to check they are current.
Sizing:
M/ML: 13.5"- 15" (34-38cm)
L: 15.5"-17" (39-43cm)
XL-2XL: 17.5"-18.5" (44-47cm).
Neck Circumference in line with Adams Apple
XS-S 30-33cm
M-ML 34-38cm
L 39-43cm|
XL-XXL 44-47cm
3XL 48-51cm
In my experience a neoprene neck seal is warmer than silicone/latex, say equivalent to adding at least one poly top layer. Have done dives to -1.5 C and neoprene really makes a difference for me. I also find neoprene is more comfortable. I am regularly in my suits for many hours at a time and find silicone neck seals can be irritating, although they are much better than latex. On the other hand I am really happy with the bottle type latex wrist seals from Seaskin and would not bother to get silicone.
The neoprene neck seal compresses at depth but still seems to me to be warmer than silicone/latex. Have done dives to 100 m and the other thing to consider is that for most of the time on serious deep dives you are decompressing in relatively shallow water where the insulation of the neoprene becomes much more effective.
Folding the seal to put it on definitely takes more time/care than latex/silicone, but is not really that significant for me. I think that silicone neck seals are less likely to leak, but for me the advantages of a Waterproof brand neoprene neck seal greatly outweigh the disadvantages.
I carry a spare silicone neck seal on dive trips but it is for emergency use only and I don't expect to have to use it.