O Neill Thinskins 0.5mm LS Springsuit
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The Lightest Neoprene Layer in the O'Neill Lineup
The O'Neill Thinskins 0.5mm Long Sleeve Springsuit is built for warm-water surfers who want minimal thermal protection without sacrificing coverage. At 0.5mm, this is the thinnest neoprene O'Neill makes, making it the go-to piece for tropical surf sessions, flat-water paddling, or any time you need a second skin that moves with you rather than against you.
Wear it alone when the water is warm and the sun is intense, or layer it under a thicker suit when conditions cool. That versatility is the point: the Thinskins is designed to expand your quiver without taking up much real estate in your gear bag.
Recycled UltraFlex Neoprene
The Thinskins is constructed from O'Neill's Recycled UltraFlex neoprene, which uses liner fabrics made of 85% or more recycled fibers. The result is a material that stretches freely in all directions and fits like a second skin from the first session, with no break-in period. The recycled construction reduces the environmental footprint without compromising the stretch or durability you expect from O'Neill neoprene.
Construction and Features
Flatlock Stitched Seams
Flatlock stitching runs the seams flat against the skin, eliminating the raised welt you get from blind-stitched construction. On a 0.5mm suit worn in warm water, breathability matters more than waterproof seams, and flatlock delivers exactly that: seams that flex, breathe, and stay comfortable during long sessions.
Back Zip Entry
The traditional back zip makes getting in and out fast without requiring a buddy. The zip runs the full length of the upper back for a wide opening, so you can pull the suit on and off solo even after a long session when your arms are tired.
Strategic Seam Placement
Seams are routed away from high-friction contact zones, reducing irritation during paddle strokes and board contact. On a suit this thin, the placement of each seam directly affects comfort, and O'Neill's pattern work keeps pressure points to a minimum.
Key Pocket with Loop
A built-in key pocket with a loop lets you secure your car key without carrying it in your boardshorts or leaving it on the beach. It is a small detail that removes a real logistical headache from every session.
Rash and Abrasion Protection
Even at 0.5mm, the neoprene panel coverage protects skin from board wax, leash rub, and sun exposure. The long sleeve cut adds arm coverage that a shorty or rash guard alone cannot match, particularly on extended paddle-heavy sessions where wax contact and UV build up over time.
UV and Sun Exposure
The neoprene fabric blocks UV radiation across the covered zones and reduces fatigue that accumulates from prolonged direct sun exposure. For South Florida surfers logging long morning sessions under intense sun, this is a functional benefit on top of the warmth, not just a marketing note.
Who This Suit Is For
The Thinskins 0.5mm LS Springsuit is purpose-built for warm-water surfers who want arm coverage without heat buildup, anyone who runs cold relative to their surf partners, and paddlers or snorkelers who want rash and UV protection in one piece. It also works as a base layer under a 2mm or 3/2 suit when water temperatures drop into the cooler range of what South Florida sees in winter months.
Shop the O'Neill Thinskins at Island Water Sports
The O'Neill Thinskins 0.5mm LS Springsuit is available in store and online at Island Water Sports. Our staff surfs the same South Florida waters you do and can help you determine whether the Thinskins fits your session conditions or whether you need a thicker option from the O'Neill lineup. Questions? Call us at 954-427-4929.
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Specifications
- Brand
- O'Neill Wetsuits
- Model
- Thinskins
- Thickness
- 0.5mm
- Gender
- Mens
- Neoprene
- Recycled UltraFlex (liner fabrics: 85%+ recycled fibers)
- Seam Construction
- Flatlock Stitched (breathable seams)
- Entry System
- Back Zip
- Key Pocket
- Yes, with loop
- UV Protection
- Yes
- Abrasion Protection
- Yes
- MPN
- itemMatrix-37067
Frequently Asked Questions
- What is the O'Neill Thinskins springsuit designed for?
- The Thinskins 0.5mm Long Sleeve Springsuit is designed for warm-water sessions where full thermal protection is not needed but coverage from UV rays, rash, and abrasion is. It works as a standalone suit in tropical conditions or as a base layer under a thicker wetsuit.
- What is Recycled UltraFlex neoprene?
- Recycled UltraFlex is O'Neill's high-stretch neoprene that uses liner fabrics made of 85% or more recycled fibers. It provides a second-skin fit and free range of motion while reducing the environmental impact of the suit's construction.
- Is flatlock stitching durable enough for regular surf sessions?
- Yes. Flatlock stitching is standard on warm-water wetsuits because waterproof seams are not required at tropical temperatures. The seams lie flat against the skin, resist flex fatigue, and stay comfortable through repeated sessions. They are not ideal for cold-water diving where seam waterproofing is critical, but for warm-water surfing they are the correct choice.
- Can the Thinskins 0.5mm be layered under another wetsuit?
- Yes. The suit's second-skin fit and thin profile allow it to layer under a 2mm or 3/2 suit, which is useful when water temperatures are cooler than your usual conditions. Worn as a base layer, it adds a measurable thermal buffer without restricting movement.
- Does the O'Neill Thinskins provide UV protection?
- Yes. The neoprene panels block UV radiation across the torso, arms, and upper legs, and O'Neill notes that the suit reduces fatigue from prolonged sun exposure. It is not a replacement for sunscreen on exposed areas, but it provides meaningful protection on covered zones during long sessions.
- How does the back zip entry work on the Thinskins?
- A full-length back zip runs across the upper back, opening wide enough to step in and pull the suit on without assistance. It closes with a cord pull so you can seal it solo, and the back zip design keeps the front panel free of any hardware that could press against the board or skin.
- Is this a men's wetsuit top or a full springsuit?
- It is a full springsuit, meaning it covers the torso, upper legs (short-leg cut), and full arms (long sleeve). It is not a wetsuit top. The long sleeve springsuit format gives you arm coverage that a shorty or wetsuit top alone does not provide.