Arctic Undersuit

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Evan Kovacs

Woods Hole
Oceanographic Institution

Halo3D - Biomapped Thermal Protection

Maximising thermal protection whilst minimising buoyancy, the HALO 3D has body mapped insulation, strategically placed to enhance protection when in horizontal trim. Designed for use underneath membrane and trilaminate suits, the HALO 3D is the perfect complement to our current range of drysuit thermal protection. In a layering combination with Xerotherm, HALO 3D is suitable for the harshest diving conditions on the planet.

products in the range

thermocline

Testimonials:

This is absolutely the best under suit I have ever tried. I went diving, first in 2°C 36°F Silfra in Iceland for 48 min cave dive then in the ocean for 54 min. I was still warm and by the time I got all the gear off I was sweating and drove home on my t-shirt and shorts with no heating on in the car. What a miracle under suit this is!
Anna Maria Einarsdottir, Master Scuba Diver Trainer

Best underwear I have used. 5°C 41°F with nothing but halo and was incredibly warm. The chest and front insulation really was ingenious. Seriously, I think it is one of the better dive related products to come out in a while.
Evan Kovacs, Technical Diver and 3D filmmaker, Woods Hole Oceanograhic Institute.

The water was 7°C 45°F and everbody was freezing their butts off except me in my nice warm new halo.That undersuit is amazing....
JP Bresser GUE Instructor of the year 2010

Halo3D - Features

Halo3d spacetek

SpaceTek Compression Resistant Panels: SPACETEK material blends perfectly with the dual layer construction to provide a constant, compression resistant layer of air on the torso front, thighs and shoulders. The benefit of this additional protection becomes clear, as soon as you enter the water as you feel cocooned by 8mm thick enhanced thermal protection layers.

Halo3d fleece

High Density Fleece: Three layers of heavyweight, high density material enhance protection of critical areas. The back, kidney region, buttocks and hamstring region are protected. Combined with the insulation offered by the SPACETEK material, you will feel warmer and better protected.

Halo3d features

One Piece Design: The one piece design is simple and functional; lower profile around the hips and midriff, allowing high manoeuvrability with panels of additional thermal protection layers located where they are needed most, enhancing the thermal protection in critical zones without excessive bulkiness. It can be worn as part of a layer system with drybase, xerotherm and in extreme cases, even Arctic.

Thumb Loops on the sleeves make donning a drysuit on top of the Halo 3D easy. There is a useful pocket in the right arm is ideal for small valuables. P-valve holes are located at the inner thigh on both legs so the user can select the preferred leg for routing the catheter, the holes are not fully open as only a small number of users will need to use them. If a p-valve is required you will need to carefully cut using sharp scissors to open the hole wide enough for the catheter tube to fit through. Be careful not to cut into or beyond the end of the button hole stitching as this will allow the fabric to fray.

Halo3D - Sizing

Use the table below as a guide to help select which size Halo3D best suits your body type. If you require any further assistance/advice please don't hesitate to contact us.

Size Chart

Sizes Mens Height Chest Waist
Inches Cm Inches Cm Inches Cm
Small 5'5"-5'8" 166-174 34-38" 86-96 26-28" 66-71
Medium-Short 5'7"-5'10" 171-179 38-42" 96-106 30-32" 76-81
Medium 5'9"-6' 176-183 38-42" 96-106 30-32" 76-81
Medium-Tall 5'11"-6'2 180-188 38-42" 96-106 30-32" 76-81
Large-Short 5'8"-5'11" 172-180 41-46" 105-116 34-36" 86-91
Large 5'11"-6'2" 180-188 42-46" 106-116 34-36" 86-91
Large-Tall 6'1"-6'4" 185-193 42-46" 106-116 34-36" 86-91
X-Large-Short 5'10"-6'1" 177-185 45-50" 116-127 38-42" 96-106
X-Large 6'1"-6'4" 185-193 46-50" 116-127 38-42" 96-106
X-Large Tall 6'3"-6'6" 190-198 46-50" 116-127 38-42" 96-106
XX-Large-Short 5'10"-6'1" 177-186 50-54" 127-137 42-46" 106-116
XX-Large 6'3"-6'6" 190-198 50-54" 127-137 42-46" 106-116
XXX-Large-Short 6'1"-6'4" 185-193 54-58" 137-147 46-50" 117-127
XXX-Large 6'5"-6'8" 195-202 54-58" 137-147 46-50" 117-127
Sizes Womens Height Chest Waist Hips
Inches Cm Inches Cm Inches Cm Inches Cm
6 5'3"-5'6" 160-168 30-32" 76-81 22-24" 56-61 33-35" 84-89
8-10-Short 5'3"-5'6" 160-167.5 31-33" 79-84 24-26" 61-66 35-36" 86-91.5
8-10 5'4"-5'7" 162.5-170 31-33" 79-84 24-26" 61-66 34-36" 86-91.5
10-12 Short 5'4"-5'7" 162.5-170 32-34" 81-86 26-28" 66-71 35-37" 89-94
10-12 5'5"-5'8" 165-173 32-34" 81-86 26-28" 66-71 35-37" 89-94
12-14 Short 5'5"-5'8" 165-173 34-36" 86-91.5 28-30" 71-76 36-38" 91.5-96.5
12-14 5'6"-5'9" 167.5-175 34-36" 86-91.5 28-30" 71-76 36-38" 91.5-96.5
14-16 Short 5'6"-5'9" 167.5-175 36-38" 91.5-96.5 29-31" 73.5-79 38-40" 96.5-101.5
14-16 5'7"-5'10" 170-178 36-38" 91.5-96.5 29-31" 73.5-79 38-40" 96.5-101.5
16-18 Short 5'7"-5'10" 170-178 38-40" 96.5-101.5 31-33" 79-84 40-42" 101.5-106.5
16-18 5'8"-5'11" 172.5-180 38-40" 96.5-101.5 31-33" 79-84 40-42" 101.5-106.5
18-20 Short 5'7"-5'10" 172.5-180 40-42" 101.5-106.5 33-35" 84-89 42-44" 106.5-112
18-20 5'8"-5'11" 172.5-180 540-42" 101.5-106.5 33-35" 84-89 42-44" 106.5-112
20-22 Short 5'7"-5'10" 173.5-180 42-44" 107-112 35-37" 89-94 44-46" 112-117
20-22 5'8"-5'11" 172.5-180 42-44" 107-112 35-37" 89-94 44-46" 112-117

International Size Comparison Guide

UK USA France Germany Italy
6-8 4-6 34 32 38
8-10 6-8 36 34 40
10-12 8-10 38 36 42
12-14 10-12 40 38 44
14-16 12-14 42 40 46
16-18 14-16 44 42 48
18-20 16-18 46 44 50
20-22 18-20 48 46 52