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3. DRYSUIT SPECIFICATIONS
NEOPRENE
Neoprene used for drysuit is a closed-cell neoprene foam made of synthetic rubber containing
small enclosed bubbles of nitrogen gas. Nitrogen having a low thermal conductivity, it minimizes
heat transport through the material. Therefore, neoprene material has its inherent thermal protection
and buoyancy. The hyper-compressed neoprene used on SF Tech drysuits is very dense and resists
compression at depth. The suit only loses a small percentage of its surface buoyancy and thermal
insulation when the ambient pressure increases. Overall, a neoprene suit requires less added
insulation under the suit than a trilaminate drysuit.
Our neoprene suits are made of 2mm hyper compressed neoprene, laminated with nylon and
polyester jersey. The exterior layer is made of heavy-duty weave reinforced with Kevlar® fabric to
withstand wear and abrasion while the inside is designed for comfort. Every seams are sewn with a
two thread locking blind-stitch and the inside is sealed with 3-5 layers of urethane sealant.
TRILAMINATE
Trilaminate suits, also known as trilam or membrane suits, are made of a multi-layer material. This
kind of material is not as stretchy as neoprene, however it is more flexible and provides a good
range of motion. Trilaminate has neither inherent thermal protection nor buoyancy. The suit provides
a waterproof shell and the thermal insulation is made by the undergarment.
Our trilaminate suits are made of a middle layer of waterproof butyl laminated between two layers
of fabric. The exterior is made of Nylon Ripstop and Kevlar® fabric to withstand wear and abrasion
while the inside is designed for comfort. The seams are sewn with triple stitch and the inside is
sealed with 3-5 layers of urethane sealant.
TNT: TITANIUM NEOPRENE TRILAMINATE
Revolutionary material invented and developed in the premises of SF Tech, TNT is a trilaminate
material using high density neoprene foam as an impermeable layer instead of butyl rubber
A layer of hyper-compressed neoprene foam is coated of solid Titanium alloy, called Ti-Alpha,
creating an efficient insulating barrier. The material is then laminated with a external layer made of
Kevlar® reinforced fibers to withstand wear and abrasion while the inside is designed for comfort
The overall fabric undergoes a second compression process in a hyperbaric chamber. This process
create a thin, flexible and dense neoprene trilaminate. By using neoprene as a waterproof medium
instead of butyl, flexibility et heat insulation are substantially enhanced.
The suit is assembled with triple stitch seams and the inside is sealed with 3-5 layers of urethane
sealant.
SIZING
We believe that each individual is unique, therefore all SF Tech drysuits are made to measure.
