Florence Marine X UPF LS Shirt
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Built to Move, Built to Protect
The Florence Marine X UPF LS Shirt is the do-anything long sleeve sun shirt for surfers, paddlers, and anyone spending serious time on the water. A UPF 50+ rating blocks harmful UV rays across the full sleeve length, giving your arms and torso the coverage a standard rashguard misses without the weight or stiffness of a technical top.
Fabric and Construction
The shirt is cut from 100% recycled polyester woven into a 4-way stretch knit. That stretch works in every direction, following your paddle stroke, pop-up, or carry up the beach without pulling or twisting out of position. Florence Marine X engineered the construction specifically to resist bagging out after water immersion, so the fit stays put whether you wear it dry on a trail or soaked in the lineup.
Set-on raglan sleeves extend that range of motion through the shoulder. By running the sleeve seam from the collar to the underarm rather than straight across the shoulder, the raglan cut eliminates the binding point that limits reach on conventional long-sleeve shirts. The result is a clean, unrestricted arm swing from entry to follow-through.
Performance Features
- UPF 50+ protection blocks harmful UV rays across arms and torso.
- 4-way stretch knit moves with you and holds its shape after water exposure.
- Quick-dry moisture-wicking fabric pulls sweat and water away from your skin to accelerate evaporation and keep you comfortable through long sessions.
- Antimicrobial armpit panels stay fresh across multi-activity days, reducing odor buildup even when the shirt gets wet repeatedly.
- Set-on / raglan sleeve construction delivers unrestricted shoulder mobility for paddling, surfing, and overhead movements.
Sustainability: bluesign Certified
The Florence Marine X UPF LS Shirt carries the bluesign certification, an independent standard that audits the entire textile supply chain for responsible chemical use, water efficiency, and worker safety. The 100% recycled polyester construction further reduces reliance on virgin petroleum-based fiber. You get performance you can stand behind.
Care
Machine wash cold. Hang dry. Avoid the dryer to preserve the stretch and UPF rating of the recycled polyester fabric.
Shop Florence Marine X at Island Water Sports
The Florence Marine X UPF LS Shirt is available in store and online at Island Water Sports, your South Florida source for surf and water sports gear from performance-focused brands.
Free Shipping, No Minimum for IWS Beach Club Members.
Returns are eligible within 30 days of receiving your order. Return shipping labels are FREE for IWS Beach Club Members. See more
Specifications
- UPF Rating
- 50+
- Fabric
- 100% recycled polyester
- Stretch
- 4-way stretch knit
- Sleeve Style
- Set-on / raglan
- Moisture Management
- Quick-dry, moisture-wicking
- Antimicrobial
- Yes, armpit panels
- Sustainability Certification
- bluesign certified
- Care
- Machine wash cold; hang dry
- Intended Use
- Surfing, paddling, water sports, outdoor activities
- Gender
- Men's
Frequently Asked Questions
- What does UPF 50+ mean on a sun shirt?
- UPF 50+ means the fabric blocks at least 98% of ultraviolet radiation (both UVA and UVB) from reaching your skin. On a long sleeve sun shirt like the Florence Marine X UPF LS Shirt, that protection extends across your arms and torso for the duration you wear it, without requiring reapplication the way sunscreen does.
- Is the Florence Marine X UPF LS Shirt good for surfing?
- Yes. The shirt is specifically designed for water use: 4-way stretch knit resists bagging out after submersion, raglan sleeves allow full paddle range of motion, and the quick-dry fabric wicks moisture so you stay comfortable in and out of the water. The UPF 50+ rating provides sun protection for long sessions.
- What is bluesign certification?
- bluesign is an independent third-party standard that audits textile manufacturing for responsible chemical management, water conservation, and worker safety throughout the supply chain. A bluesign certified product has met strict environmental and safety criteria at every stage of production.
- Can I wear the Florence Marine X UPF LS Shirt for activities other than surfing?
- Absolutely. The do-anything design works for paddleboarding, kayaking, hiking, fishing, or any outdoor activity where sun protection and moisture management matter. The 4-way stretch and raglan sleeve cut keep movement unrestricted across all of those uses.
- How do I care for this UPF sun shirt to maintain its protection?
- Machine wash cold and hang dry. Heat from a dryer can degrade stretch fibers and reduce the effectiveness of the UPF rating over time. Cold washing and hang drying preserve both the fit and the sun protection of the recycled polyester fabric.
- Is the Florence Marine X UPF LS Shirt made from recycled materials?
- Yes. The shirt is constructed from 100% recycled polyester and carries bluesign certification, reflecting Florence Marine X's commitment to reducing environmental impact without compromising on performance or durability.
- How does a sun shirt compare to sunscreen for UV protection on the water?
- A UPF 50+ sun shirt provides consistent, reapplication-free coverage for every area it covers, unlike sunscreen which washes off and needs frequent reapplication in and around water. Many surfers and paddlers layer both: a sun shirt for arms and torso, sunscreen for the face and any exposed skin.