Really cold days beckon for a little something extra, and the O'Neill Women's Thermo-X Long Sleeve Crew answers the call. Soft, stretchy and odor resistant, the Women's Thermo is a smart accessory for the savvy cold water surfer. Put the Thermo-X Crew on under your existing wetsuit to dabble into colder seasons or to extend an older suits life until a new one is on its way. A cold nipping layering piece that offers an additional shield of core warming protection, the O'Neill Women's Thermo-X Long Sleeve Crew gives incredible insulation with minimal bulk.
Product Info
Really cold days beckon for a little something extra, and the O'Neill Women's Thermo-X Long Sleeve Crew answers the call. Soft, stretchy and odor resistant, the Women's Thermo is a smart accessory for the savvy cold water surfer. Put the Thermo-X Crew on under your existing wetsuit to dabble into colder seasons or to extend an older suits life until a new one is on its way. A cold nipping layering piece that offers an additional shield of core warming protection, the O'Neill Women's Thermo-X Long Sleeve Crew gives incredible insulation with minimal bulk.
Product Details
4-way Stretch 220g Nylon Spandex
Maximum Core Insulation
Water Repellent HyperDry Treatment
Strategic Seamless Paddle Zones
Performance Fit
Boardshort Connector
50+ UPV and Rash Protection
Odor Resistant
Low No Interferance Neck
Warranty
This product is backed by a warranty from the manufacturer. Click below for details on the warranty policy for O'Neill products.
GENERAL WARRANTY INFORMATION AND POLICY
If the product is found to be defective under normal use and proper care,
O'Neill will repair or replace the product at our sole discretion. The
decision to replace or repair a product is made by the O'Neill Warranty
Department after receipt of the defective product. At no time does the
O'Neill offer refunds. Defective product should be returned clean and dry,
postage prepaid. Please include a note with product description, product
defects, requested action, return address (be sure to include postal code,
especially for Canadian addresses), daytime phone number with area code,
customers name and a copy of the purchase receipt sent to the address below.
Suits without a copy of the purchase receipt will NOT BE COVERED UNDER
WARRANTY.
THE FOLLOWING WILL NOT BE COVERED UNDER WARRANTY
Products classified as seconds
Fading from sunlight
Alterations
Materials over 1 year (from date of original purchase), or 90 days for
accessories
Repairs or alterations done by anyone other than O'Neill or an O'Neill
authorized repair facility
Warranty request without original receipt
PRODUCT WARRANTY
Flat-Stitched Products, Glued and Blindstitched Products, and Fluid Seam
Weld Products
Limited 1-year warranty (from date of original purchase) on workmanship
and materials.
Neoprene Dry Suits
Limited 1-year warranty (from date of original purchase) on workman ship
and materials (waterproof zipper excluded)
Accessories
Limited 90-day (from date of original purchase) warranty on workmanship
and materials
GENERAL U.S. AND CANADA REPAIR INFORMATION
For repairs received from the dealer or end user, O'Neill offers:
10 Business Day Turnaround for warranty Stitched Suits
10 Business Day Turnaround for warranty Glued Suits
20 Business Day Turnaround for warranty Fluid Seam Welded Suits
30 Business Day Turnaround for all Non-Warranty Repairs
Repairs are to be returned clean and dry, postage paid. Please include the
name and a daytime phone number with area code, return address, product
description, and requested action.
Send Repairs To:
O'Neill U.S. Warranty Repair
1022 Bay Marina Drive, Suite 140B
National City, CA 91950
Tel: 1-800-331-1637
Returns
If you are not 100% satisfied with your purchase you may return it for a refund, or exchange within 30 days of receiving your order.
Cleanline Surf Wetsuit Return Policy
Holiday Returns
For any orders placed after Nov 1st, 2025, we have extended our normal 30-day return policy to allow returns through January 31st, 2026.
Returns are easy! We understand that in some situations returns may be necessary. We also want you to be stoked on your purchase. If you are not 100% satisfied with your purchase you may return it for a full refund, within 30 days of receiving your order. Items must be in new condition with original tags and packaging.
Please note: We are unable to accept returns on used wetsuits. If you are unsure about your wetsuit fit or have any questions at all, please call us before using your wetsuit and we can offer guidance.
Please refer to our full Return Policy for more details.
O'Neill Women's Rash Guards — Size Chart
The staff at Cleanline Surf specialize in sizing O'Neill Wetsuits. If you
have never tried an O'Neill rash guard before, we strongly urge you to call
us for expert advice on sizing. We do have a size chart available below, but
please take it with a grain of salt.
Don’t suit up in cold water without it sun 40 deg air and water temp staple.
G
Ginger
Yep!
Cozy, warm, surf check/surfing thermal. It was thing I never knew I needed until I got it!
y
yellowsun
Oh Yes
I was looking for something to make the difference under my wetsuit for winter surfing in Oregon. This did it. I can get a couple of hours in before I head for shore. A bit pricey in my world but worth it.
m
mary
very pleased
Swimming with the sunrise. Very cold outside, often freezing. This top has been very helpful to try to stay warm with swim workout. Love the fit, like skin and allows for freedom of movement. Arm length great as I have long arms. Dries relatively quickly. Very pleased with what it is supposed to do.
C
Cynbad
Absolute necessity
This is by far my favorite, must have piece of gear. I even mentioned this in a Kiteboarding Magazine interview, years ago. This is my second one, only because I had a bad Prone foil accident which sliced through both my wetsuit and my Thermo X top, back in March. It’s amazing how the fleece keeps water off your skin. No other product does what this top does. When I take my wetsuit off, the top feels dry and I feel warm. I tell all of my chilly girlfriends to buy one. Warm, cozy magic, in cold, windy conditions.
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What Our Customers Are Saying