I do not have the Antartica suit, but if you read the posts from that thread (especially the last pages) you'll see comments about how thick that garment is .
I have the 4Way Flex with a single 320g layer ... http://cgi.ebay.com/4-WAY-FLEX-DRY-SUIT-UNDERGARMENT-SIZE-SMALL_W0QQitemZ130272626607QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item130272626607&_trksid=p3911.c0.m14&_trkparms=72%3A1205%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318
and the quilted 3 layer (2 x 250g + nylon outer layer) .. http://cgi.ebay.com/QUILTED-DRY-SUI...14&_trkparms=72:1205|66:2|65:12|39:1|240:1318
Oh, I asked Ron before purchase and it is two layers of 250g/sqm fleece
not that it's the best but I feel they are fine and you can't beat the price, and if I feel the need to upgrade at some point to a high quality (expensive) undergarment, I havn't spent a whole lot on them.
And Ron will get right back to you with any info or help that you need
I have the 4Way Flex with a single 320g layer ... http://cgi.ebay.com/4-WAY-FLEX-DRY-SUIT-UNDERGARMENT-SIZE-SMALL_W0QQitemZ130272626607QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item130272626607&_trksid=p3911.c0.m14&_trkparms=72%3A1205%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318
and the quilted 3 layer (2 x 250g + nylon outer layer) .. http://cgi.ebay.com/QUILTED-DRY-SUI...14&_trkparms=72:1205|66:2|65:12|39:1|240:1318
Oh, I asked Ron before purchase and it is two layers of 250g/sqm fleece
not that it's the best but I feel they are fine and you can't beat the price, and if I feel the need to upgrade at some point to a high quality (expensive) undergarment, I havn't spent a whole lot on them.
And Ron will get right back to you with any info or help that you need