---
product_id: 44689037
title: "O'Neill Men's Thermo-X Long Sleeve Crew-Neck Rashguard Top, UPF 50+ Sun Protection with 4-Way Stretch Thermal Fleece Fabric"
brand: "o'neill"
price: "$124.83"
currency: USD
in_stock: true
category: "O'neill"
url: https://www.desertcart.us/products/44689037-oneill-mens-thermo-x-long-sleeve-crew-neck-rashguard-top
store_origin: US
region: United States of America
---

# 220g Thermo-X Insulation 4-Way Stretch Mobility UPF 50+ Sun Protection O'Neill Men's Thermo-X Long Sleeve Crew-Neck Rashguard Top, UPF 50+ Sun Protection with 4-Way Stretch Thermal Fleece Fabric

**Brand:** o'neill
**Price:** $124.83
**Availability:** ✅ In Stock

## Summary

> 🌊 Gear Up, Stay Warm & Protected — Own Every Wave!

## Quick Answers

- **What is this?** O'Neill Men's Thermo-X Long Sleeve Crew-Neck Rashguard Top, UPF 50+ Sun Protection with 4-Way Stretch Thermal Fleece Fabric by o'neill
- **How much does it cost?** $124.83 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/44689037-oneill-mens-thermo-x-long-sleeve-crew-neck-rashguard-top)

## Best For

- o'neill enthusiasts

## Why This Product

- Trusted o'neill brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Quick-Dry & Odor Resistant:** Stay fresh and dry with HyperDry technology that repels water and resists odors.
- • **Low-Profile Crew Neck Design:** No wetsuit interference—layer seamlessly for maximum comfort and style.
- • **Shield Your Skin with UPF 50+:** Stay protected from harmful UV rays while looking sharp on and off the water.
- • **Thermo-X Thermal Fleece Fabric:** Experience lightweight warmth without bulk—perfect for chilly water days.
- • **4-Way Stretch for Ultimate Mobility:** Moves like a second skin, ensuring unrestricted performance in every paddle or wave.

## Overview

The O'Neill Men's Thermo-X Long Sleeve Rashguard combines UPF 50+ sun protection with advanced Thermo-X thermal fleece fabric, delivering lightweight insulation and quick-dry performance. Designed with 4-way stretch for a snug, second-skin fit, it offers superior mobility and durability for water sports enthusiasts seeking warmth and protection without bulk.

## Description

The O’Neill Men’s Thermo-X Long Sleeve Crew delivers quick-dry, lightweight insulation, UV protection, and comfort in and out of the water. Designed with a performance fit, it moves like a second skin for maximum mobility and layering versatility. The U.P.F. 50+ rating shields against harmful rays, while the quick-dry 4-way stretch fabric and flatlock seams add durability and comfort. Featuring Thermo-X HyperDry technology, this top minimizes water absorption while providing insulation and rash protection. Ideal for surfing, swimming, paddling, kayaking, wakeboarding, waterskiing, snorkeling, diving, windsports, or simply enjoying your favorite activity on the water. Thermo-X offers a reliable fit, fresh modern style, and the trusted O’Neill quality that’s built to last.

## Features

- Other Fibers
- Imported
- Skin Cancer Foundation Recommended Product; UPF 50+ Ultraviolet Protection
- Perfect For Chilly Days When An Extra Layer Of Warmth Under Your Wetsuit Is Needed
- Thermo-X Layering Fabric Provides Incredible Insulation With Low Bulk And Quik-Dry Properties
- 220g Nylon/Spandex Includes Water Repellency And Odor Resistance
- ***Super Low Neck: No Interference With The Neck Of Your Wetsuit

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06XGQT5Q9 |
| Age Range Description | Adult |
| Apparel Closure Type | Pull On |
| Apparel Fabric Stretch | Medium Stretch |
| Apparel Fabric Weight Class | Medium Weight |
| Back Style | Crew Neck |
| Best Sellers Rank | #40,495 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #9 in Men's Diving Rash Guard Shirts |
| Brand Name | O'NEILL |
| Chest Size | 52 inches |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (328) |
| Fabric Type | Other Fibers |
| Fit Type | Snug |
| Fit to Size Sentiment | True to Size |
| Garment Size Country | United States |
| Global Trade Identification Number | 00191015009772 |
| Import Designation | Imported |
| Included Components | wetsuit |
| Item Type Name | Rash Guards |
| Life Event | Water Sports, Outdoor Activities in Cold Weather |
| Lining Description | The lining is made of 220g Nylon/Spandex with HyperDry technology, similar to the outer shell, providing a smooth and quick-dry inner layer. |
| Manufacturer | O'Neill Wetsuits |
| Manufacturer Part Number | 5022-002-2XL |
| Material Type | Nylon, Spandex |
| Neck Style | Crew Neck |
| Number of Items | 1 |
| Pattern | Solid |
| Product Benefits | UV Protection, Quick-Dry, Thermal Layering |
| Product Care Instructions | Hand Wash Only |
| Rise Style | Mid Rise |
| Size | XX-Large |
| Sleeve Length Description | Long Sleeve |
| Sleeve Type | Long Sleeve |
| Special Size Type | Standard |
| Strap Type | Non-Adjustable |
| Style Name | Men's Thermo-x L/S Crew |
| Style Number | 5022 |
| Swimwear Form Type | Rash Guard |
| Swimwear Top Form | Rash Guard Top |
| UPC | 191015009772 |
| Ultraviolet Protection Factor | UPF 50+ |
| Unit Count | 1 Count |
| character | sports |

## Images

![O'Neill Men's Thermo-X Long Sleeve Crew-Neck Rashguard Top, UPF 50+ Sun Protection with 4-Way Stretch Thermal Fleece Fabric - Image 1](https://m.media-amazon.com/images/I/71Uu4GSn8EL.jpg)

## Available Options

This product comes in different **Color, Size** options.

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**Shop now:** [https://www.desertcart.us/products/44689037-oneill-mens-thermo-x-long-sleeve-crew-neck-rashguard-top](https://www.desertcart.us/products/44689037-oneill-mens-thermo-x-long-sleeve-crew-neck-rashguard-top)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-09-09*