O'Neill Basic Skins UPF 50+ Long Sleeve Sun Shirt - Lightweight Men's

In this review the O'Neill Basic Skins UPF 50+ Long Sleeve Sun Shirt is evaluated for swimmers, surfers, and anyone who spends long days on the water. The bottom line: it is a functional, value-focused rashguard that delivers reliable sun protection and comfortable movement without the higher price of premium models. Built with a slim cut and durable polyester/spandex fabric, this shirt is best for active water sports where UPF 50+ coverage and minimal chafing matter more than fashion-forward features.

Key Features

• UPF 50+ Ultraviolet Protection: Blocks the majority of harmful UV rays so wearers can spend extended time outdoors with less reliance on sunscreen for covered areas.
• Skin Cancer Foundation Recommended: An endorsement that signals the shirt meets recognized standards for effective sun-protective apparel.
• 6oz Polyester/Spandex Construction: A blend that balances durability and stretch for ease of paddling, swimming, or surfing without sagging in the water.
• Overlock Stitched Seams: Super-strong seam construction reduces seam failure and helps prevent irritation during repetitive arm motion.
• Minimal Seam Placement: Fewer seams across common contact points lowers the chance of chafing when worn under a wetsuit or alone on beach days.
• Slim Fit: Designed to sit close to the body for reduced drag and better layering, while not being uncomfortably tight for most users.

Who It's For

The Basic Skins sun shirt is aimed at active water users who want a dependable, no-frills rashguard for surfing, paddle sports, swimming, boating, and beach days. It suits people who prioritize functionality and sun protection over styling and are comfortable with a slimmer fit.

Shoppers who prefer a loose, lifestyle-fit rashguard or who need thermal insulation for very cold water should look elsewhere; this shirt is not a thermal wetsuit layer and runs slim, so consider sizing up if a roomier fit is desired.

Pros & Cons

Pros

• Reliable sun protection with UPF 50+ and a Skin Cancer Foundation recommendation.
• Comfortable, flexible polyester/spandex fabric that works well in and out of water.
• Strong overlock stitching and minimal seams for durability and reduced rash risk.
• Good value for the protection and build quality delivered at a lower price point.

Cons

• Slim fit can run small for some users, so ordering up a size may be necessary for a relaxed fit.
• Simple, pared-down styling offers fewer aesthetic options for those seeking bold design choices.

Specifications

Brand	O'Neill Wetsuits
Product Type	Long Sleeve Sun Shirt / Rashguard
UPF Rating	UPF 50+ Ultraviolet Protection
Material	6oz Polyester/Spandex
Seams	Overlock stitched with minimal seam placement
Fit	Slim fit (consider sizing up for looser fit)

Our Verdict

The O'Neill Basic Skins UPF 50+ Long Sleeve Sun Shirt is a practical choice for water-sport enthusiasts who need effective UV protection and a durable, low-profile rashguard at a value price. It is well made for active use and the Skin Cancer Foundation recommendation reinforces its protective purpose; buy it if you want function and reliability without paying for extras.

Frequently Asked Questions

Does this shirt block sun exposure effectively?
The shirt offers UPF 50+ protection and is Skin Cancer Foundation recommended, which means it blocks a high percentage of UV rays over covered skin.

How does sizing run for this sun shirt?
The cut is a slim fit and some customers report it runs small; if you prefer a looser fit consider ordering one or two sizes up.

Is this suitable for wearing under a wetsuit?
Yes, the minimal seam placement and slim profile make it suitable as a base layer under a wetsuit or for standalone wear in warm water.