Our Aqualung Undersuits provide crucial thermal protection when diving, trapping air and maintaining body heat during the dive and also between dives. Modern undersuits can range from simple fleece type garments to advanced suits with anti-compression panels or even built in heating. Your thermal requirements will depend on water temperature, your suit type and how much you feel the cold.

Water transfers heat from the body up to 25 times faster than air which means a divers will quickly start to feel the cold without protection, the colder the water the quicker the onset and the greater the need for undersuits and base layers. Drysuits have their own thermal properties, some are much better than others. Neoprene suits are much warmer and require thinner undersuits but membrane suits provide very little thermal protection and therefore require thicker or even layered undersuits.

  • AQUA LUNG THERMAL FUSION UNDERSUITAQUA LUNG THERMAL FUSION UNDERSUIT
    798 Points
    • AQUA LUNG THERMAL FUSION UNDERSUITAQUA LUNG THERMAL FUSION UNDERSUIT
    • AQUA LUNG THERMAL FUSION UNDERSUIT
    • £399.00
    • RRP: £432 Free UK delivery on all orders over £50 The Aqua Lung Thermal Fusion keeps the skin and core temperature protected and warm. This undergarment purpose is to keep the divers body warmer when in cold water conditions. The Aqua Lung Thermal Fusion still allows divers to move freely compared to other undergarment.
  • APEKS THERMIQ CARBON LONG SLEEVE LADIESAPEKS THERMIQ CARBON LONG SLEEVE LADIES
    232 Points
    • APEKS THERMIQ CARBON LONG SLEEVE LADIESAPEKS THERMIQ CARBON LONG SLEEVE LADIES
    • APEKS THERMIQ CARBON LONG SLEEVE LADIES
    • £116.00
    • Free UK delivery on all orders over £50 Triple layer soft shell fabric ensures the top keeps you warm in all environments. Breathable fabrics prevent moisture build up when used underneath a drysuit. Advanced lining is made from graphene wrapped fibres which acts as a superconductor.
  • APEKS THERMIQ CARBON LONG SLEEVE MENSAPEKS THERMIQ CARBON LONG SLEEVE MENS
    232 Points
    • APEKS THERMIQ CARBON LONG SLEEVE MENSAPEKS THERMIQ CARBON LONG SLEEVE MENS
    • APEKS THERMIQ CARBON LONG SLEEVE MENS
    • £116.00
    • Free UK delivery on all orders over £50 Triple layer soft shell fabric ensures the top keeps you warm in all environments. Breathable fabrics prevent moisture build up when used underneath a drysuit. Advanced lining is made from graphene wrapped fibres which acts as a superconductor.
  • APEKS THERMIQ CARBON SHORT SLEEVE LADIESAPEKS THERMIQ CARBON SHORT SLEEVE LADIES
    214 Points
    • APEKS THERMIQ CARBON SHORT SLEEVE LADIESAPEKS THERMIQ CARBON SHORT SLEEVE LADIES
    • APEKS THERMIQ CARBON SHORT SLEEVE LADIES
    • £107.00
    • Free UK delivery on all orders over £50 Triple layer soft shell fabric ensures the top keeps you warm in all environments. Breathable fabrics prevent moisture build up when used underneath a drysuit. Advanced lining is made from graphene wrapped fibres which acts as a superconductor.
  • APEKS THERMIQ CARBON SHORT SLEEVE MENSAPEKS THERMIQ CARBON SHORT SLEEVE MENS
    214 Points
    • APEKS THERMIQ CARBON SHORT SLEEVE MENSAPEKS THERMIQ CARBON SHORT SLEEVE MENS
    • APEKS THERMIQ CARBON SHORT SLEEVE MENS
    • £107.00
    • Free UK delivery on all orders over £50 Triple layer soft shell fabric ensures the top keeps you warm in all environments. Breathable fabrics prevent moisture build up when used underneath a drysuit. Advanced lining is made from graphene wrapped fibres which acts as a superconductor.
  • AQUA LUNG CERAMIQ SKIN LONG SLEEVE MENSAQUA LUNG CERAMIQ SKIN LONG SLEEVE MENS
    198 Points
    • AQUA LUNG CERAMIQ SKIN LONG SLEEVE MENSAQUA LUNG CERAMIQ SKIN LONG SLEEVE MENS
    • AQUA LUNG CERAMIQ SKIN LONG SLEEVE MENS
    • £99.00
    • RRP: £116 Free UK delivery on all orders over £50 Tri-laminated fabric: Lycra on the outside, PU membrane with Ceramic Technology. The Breathable PU membrane facilitates the transfer of moisture from inside to outside. Ceramic technology: Uses a blend of 30 metallic oxides derived from volcanic rocks, heated at 1600°C.
  • AQUA LUNG CERAMIQ SKIN LONG SLEEVE LADIESAQUA LUNG CERAMIQ SKIN LONG SLEEVE LADIES
    198 Points
    • AQUA LUNG CERAMIQ SKIN LONG SLEEVE LADIESAQUA LUNG CERAMIQ SKIN LONG SLEEVE LADIES
    • AQUA LUNG CERAMIQ SKIN LONG SLEEVE LADIES
    • £99.00
    • RRP: £116 Free UK delivery on all orders over £50 Tri-laminated fabric: Lycra on the outside, PU membrane with Ceramic Technology. The Breathable PU membrane facilitates the transfer of moisture from inside to outside. Ceramic technology: Uses a blend of 30 metallic oxides derived from volcanic rocks, heated at 1600°C.
  • AQUA LUNG CERAMIQSKIN PANTS MENSAQUA LUNG CERAMIQSKIN PANTS MENS
    178 Points
    • AQUA LUNG CERAMIQSKIN PANTS MENSAQUA LUNG CERAMIQSKIN PANTS MENS
    • AQUA LUNG CERAMIQSKIN PANTS MENS
    • £89.00
    • RRP: £98 Free UK delivery on all orders over £50 Tri-laminated fabric: Lycra on the outside, PU membrane with Ceramic Technology. The Breathable PU membrane facilitates the transfer of moisture from inside to outside. Ceramic technology: Uses a blend of 30 metallic oxides derived from volcanic rocks, heated at 1600°C.
  • AQUA LUNG CERAMIQSKIN PANTS LADIESAQUA LUNG CERAMIQSKIN PANTS LADIES
    178 Points
    • AQUA LUNG CERAMIQSKIN PANTS LADIESAQUA LUNG CERAMIQSKIN PANTS LADIES
    • AQUA LUNG CERAMIQSKIN PANTS LADIES
    • £89.00
    • RRP: £98 Free UK delivery on all orders over £50 Tri-laminated fabric: Lycra on the outside, PU membrane with Ceramic Technology. The Breathable PU membrane facilitates the transfer of moisture from inside to outside. Ceramic technology: Uses a blend of 30 metallic oxides derived from volcanic rocks, heated at 1600°C.
  • AQUA LUNG CERAMIQ SKIN SHORT SLEEVE MENSAQUA LUNG CERAMIQ SKIN SHORT SLEEVE MENS
    158 Points
    • Sale!
      AQUA LUNG CERAMIQ SKIN SHORT SLEEVE MENSAQUA LUNG CERAMIQ SKIN SHORT SLEEVE MENS
    • AQUA LUNG CERAMIQ SKIN SHORT SLEEVE MENS
    • £98.00 £79.00
    • RRP: £98 Free UK delivery on all orders over £50 Tri-laminated fabric: Lycra on the outside, PU membrane with Ceramic Technology. The Breathable PU membrane facilitates the transfer of moisture from inside to outside. Ceramic technology: Uses a blend of 30 metallic oxides derived from volcanic rocks, heated at 1600°C.
  • AQUA LUNG CERAMIQ SKIN SHORT SLEEVE LADIESAQUA LUNG CERAMIQ SKIN SHORT SLEEVE LADIES
    158 Points
    • Sale!
      AQUA LUNG CERAMIQ SKIN SHORT SLEEVE LADIESAQUA LUNG CERAMIQ SKIN SHORT SLEEVE LADIES
    • AQUA LUNG CERAMIQ SKIN SHORT SLEEVE LADIES
    • £98.00 £79.00
    • RRP: £98 Free UK delivery on all orders over £50 Tri-laminated fabric: Lycra on the outside, PU membrane with Ceramic Technology. The Breathable PU membrane facilitates the transfer of moisture from inside to outside. Ceramic technology: Uses a blend of 30 metallic oxides derived from volcanic rocks, heated at 1600°C.