Gul Radiation Thermal Drysuit Undersuit

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Gul Radiation Thermal Drysuit Undersuit

The Radiation Undersuit uses 300 gram anti-pilling Quick Dry fleece to provide superior warmth and insulation beneath the drysuit outer later. A superb quality thermal base layer garment to wear under your drysuit which will help enhance the performance of any breathable drysuit. Made from high-tech lightweight fleece material, it traps body warmth but also breathes to allow moisture to evaporate.

The breathability of any drysuit will be improved by wearing the correct breathable base layers and the Gul Thermal Radiation undersuit works in conjunction with your drysuit.  By allowing for layers to be worn underneath the Gul Undersuit is necessarily roomy which also helps freedom of movement particularly for more active sailors.  These thermal 'onesies' have more recently also become extremely popular as a thermal layer to put on after open water/wild swimming.

Gul Radiation Thermal Drysuit Undersuit Features

  • 300 gsm fleece 'onesie'
  • Quick-Dry breathable polar fleece for warmth and comfort yet lightweight
  • Full length 2-way zip for convenience
  • Crew neck reducing bulk around the neck area
  • Elasticated wrists for snug fit
  • Thumb loops for ease of donning
  • Elasticated middle for tailored fit providing ease of movement
  • Foot loops to prevent garment riding up during wear when wearing with your drysuit.

Availability, Delivery & Returns


"In Stock"
This means that the item is in stock and ready for despatch. We do make the odd mistake but 98% of items that say in stock, are actually in stock. If you are ordering a quantity of any item, you are welcome to email or phone to check the quantity available.

"Despatch 6-10 Days"
You are able to buy/order the item but just to advise you that the item is not currently in our warehouse and therefore not available for immediate despatch but is on order or en route to us from the supplier and we hope to despatch your order within 6-10 Working Days, often less. If you want to know more details do just e-mail or phone us.

"Sold Out"
May mean the item is no longer available or possibly out of stock for some time. If you want to know more details just e-mail or phone us.


Free Standard UK Delivery on orders over £35 are usually sent by Royal Mail Tracked 48 service (*exclusions apply see Delivery FAQs). FREE delivery, on orders over £35, applies to MOST, NOT ALL* UK mainland addresses (*exclusions apply see Delivery FAQs). We use a combination of Royal Mail and Carrier services and in some cases a signature is required to confirm receipt (high value/bulky orders).

For further detailed information please see Delivery FAQs.

We reserve the right to collate multiple orders into one delivery if going to the same address. We are unable to split orders/deliveries if any one item in an order is not available from stock, indicated by 'Despatch due date / Awaiting stock / Stock expected'. So we would usually despatch an order once complete as/when all the items are available from stock to send as one parcel.


We hope you are completely satisfied with your purchase but any Christmas Gift purchases from Saturday 21st October 2023 which are unsuitable may be returned for exchange or refund, when received by 13th January 2024

Please email or phone us on 01736 751066 for a RETURNS AUTHORISATION NUMBER before sending the goods. Do please click here for all the details

Gul Radiation Thermal Drysuit Undersuit Reviews

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