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Still covered at mile 10.

Sunscreen sweats off. After 40 minutes of hard effort, your arms are unprotected and you won't even notice. LifeJacket's UPF 50+ Active Tee blocks 98% of UV rays from the first stride to the last. No reapplication, ever.

RUN COVERED

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Why sunscreen isn't enough on a long run.

Sunscreen was designed for the beach. Not for an hour at threshold pace. Under real running effort, the protection you applied at the door is long gone before you get home.

Gone by mile three.

Sweat dissolves sunscreen faster than most people think. On a long run, your arms are exposed well before the halfway point. You won't feel it happening.

Long sleeves overheat you.

Most long-sleeve tops trap heat and moisture against your skin. The longer the run, the worse it gets. You end up slowing down or stripping it off entirely.

Your kit isn't protecting you.

Most UV-protective activewear uses a chemical treatment on the fabric surface. That treatment breaks down in the wash. After around 20 washes, the protection you paid for has already gone.

Built for runners who go the distance.

Every feature in this tee is built to keep you moving comfortably and covered, whether you're out for 40 minutes or four hours.

UPF 50+ woven into the fabric. Blocks 98% of UV rays, wash after wash, run after run.
Moisture-wicking and quick-drying. Stays cool and comfortable at pace, even on long efforts.
Dropped shoulders, relaxed cut. Full range of motion with nothing pulling, bunching, or restricting your stride.

★★★★★

"I bought this specifically for a summer trail ultra... The event was an 80k course... The shirt performed brilliantly. Super comfy, fairly cool, and the sun-protection really felt like it was working."

Steve P. — Trail runner, 80k ultra, Welsh summer

UPF 50+ Long-Sleeve Active Tee

£35.00

Long-sleeve UPF 50+ active tee. Full arm protection, no sunscreen.

4.9

Rated 4.9 out of 5 stars

4.9 Stars (54 Reviews)

Tested in extreme conditions. Built for everyday ones.

UPF 50+ fabric protection
Stays dry when you sweat
Built for hours outside
UPF 50+. Blocks 98%+ of UV

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UPF 50+ Active Tee

How to find your size

Chest

Wrap a tape all around the fullest part of your chest. Take that measure and use the ‘TO FIT CHEST’ column to find your size. An even better way, is to grab something you love the fit of. Lay it flat and measure from armpit seam to armpit seam. Cross check that against our ‘PIT TO PIT’ garment measure.

Length

Got a top that’s the perfect length? Lay it flat and measure from the shoulder seam all the way to the bottom hem, in a straight line. Cross check that against our ‘LENGTH’ garment measure.

This tee is cut straight from top to bottom making it more of an athletic fit. It has four-way stretch so it moves with you.

Size	To fit chest (cm)	Pit to pit (cm)	Length (cm)
XS	84–90	46	65
S	90–96	49	68
M	96–102	52	70
L	102–108	55	73
XL	108–114	58	75
XXL	114–120	61	78

Between sizes? Size up if you prefer a looser fit. These tees have a straight, athletic cut.

Chest

Length

Got a top that’s the perfect length? Lay it flat and measure from the shoulder seam all the way to the bottom hem, in a straight line. Cross check that against our ‘LENGTH’ garment measure.

Relaxed, slightly boxy fit with a dropped shoulder seam. This is designed to be loose intentionally so it flows as you move rather than pulling tight. If you prefer a closer fit, size down - it will still have some room to it.

Size	To fit chest (cm)	Pit to pit (cm)	Length (cm)
XS	84–90	48	66
S	90–96	51	68
M	96–102	54	70
L	102–108	57	72
XL	108–114	61	74
XXL	114–120	65	76

Between sizes? This top has a dropped shoulder and a wider fit. It's intentionally loose and flows as you move. Size down for a closer fit, but it'll still be relaxed. That's the design.

Chest

Length

Got a top that’s the perfect length? Lay it flat and measure from the shoulder seam all the way to the bottom hem, in a straight line. Cross check that against our ‘LENGTH’ garment measure.

Size	To fit chest (cm)	Pit to pit (cm)	Length (cm)
XS	84–90	48	66
S	90–96	51	68
M	96–102	54	70
L	102–108	57	72
XL	108–114	61	74
XXL	114–120	65	76

Between sizes? Same fit as the Long-Sleeve Active Tee. Dropped shoulder, intentionally wide and loose. Size down if you want it closer to the body, but it'll still be relaxed.

Chest

Length

Got a top that’s the perfect length? Lay it flat and measure from the shoulder seam all the way to the bottom hem, in a straight line. Cross check that against our ‘LENGTH’ garment measure.

A straight, relaxed cut that fits true to size. It sits comfortably without pulling or feeling restrictive.

Size	To fit chest (cm)	Pit to pit (cm)	Length (cm)
XS	84–90	47	62
S	90–96	50	65
M	96–102	53	67
L	102–108	56	70
XL	108–114	59	72
XXL	114–120	62	74

Between sizes? Size down if you prefer a slimmer look. This top has a straight, relaxed fit.

Chest

Length

Got a top that’s the perfect length? Lay it flat and measure from the shoulder seam all the way to the bottom hem, in a straight line. Cross check that against our ‘LENGTH’ garment measure.

Designed to fit close so it doesn't bunch or ride up in the water. Not skin tight like a traditional surf vest, but a snug, secure fit is intentional. It's a thinner, softer fabric than traditional rash vests. The four-way stretch gives enough room to move comfortably whether you're paddling, surfing, or swimming. If you're between sizes, size down.

Size	To fit chest (cm)	Pit to pit (cm)	Length (cm)
XS	84–90	44	73
S	90–96	47	75
M	96–102	50	77
L	102–108	53	79
XL	108–114	56	81
XXL	114–120	59	83

Between sizes? The pit-to-pit looks smaller than your chest size. That's intentional. Four-way stretch means it moves with you. If in doubt, size up.

Head circumference

Wrap a tape measure around your head, about 2cm above your ears. That’s your Head circumference. The hat has an adjustable cord, so you have a range within each size.

Available in small, medium, and large. The adjustable elastic cord lets you dial in the fit within each size, so if you're between sizes you can still get a comfortable, secure result. We'd suggest sizing up and tightening with the cord. The neck strap keeps it on when the wind picks up. When you don't need it, tuck it inside the hat.

Size	Head circumference (cm)
Small	62
Medium	64
Large	66

One size fits all. The adjustable drawcord tightens or loosens to fit any head size. A neck strap keeps it on in the wind. Tuck it inside the hat when you don't need it.

★★★★★

"Have been very impressed with this garment... I have used this for about two months now as a sun protection garment, and it has performed well. It does not wick sweat away as quickly as some Tech running shirts, but that is not its main purpose. However, it does not excessively hold moisture either. It dries quickly. The sun protection is where this excels."

Chris L. — Trail runner, two months of sun protection tested

How we're different.

UPF 50+ Long-Sleeve Active Tee	Big brand long-sleeve wicking top
UPF 50+ lab tested and certified Available in XS/S/M/L/XL/XXL	No UV testing or certification Guessing. Hoping. No idea what protection you're getting.
Engineered yarns and weave Technology built into the fabric itself.	Standard fabric construction Just a top. No UV consideration in design.
Skip sunscreen on covered skin Covered = protected. Simpler routine.	Still need SPF under your shirt Your "athletic top" isn't actually protecting you.
Flatlock seams No chafing after hours of movement.	Standard seams that rub Red marks under your arms by lunchtime.

★★★★★

"I wore it for a Half Marathon. I sweat a lot and it didn't stick or cling to me at all. I would definitely purchase another."

David B. — Half marathon runner, heavy sweater, no cling

PROTECTION IS BUILT IN.

Protection's built in. Our UPF 50+ fabrics block 98% of UV through structure, not chemicals. The weave does the work so protection doesn't wash out, wear off, or fade over time.

WHAT'S IN IT AND WHY

90% polyester, 10% spandex. Four-way stretch for full range of motion without restriction.
Performance matt yarn. Moisture-wicking, quick-drying, comfortable at pace.
High-density jacquard weave. The tight construction physically blocks UV — making the protection structural, not chemical.

OTHER USEFUL INFO

Gentle machine wash 30°C | Hang to dry | No tumble dry, no iron, no bleach | UPF structural not chemical | Available XS/S/M/L/XL/XXL

FABRIC INFORMATION

90% polyester, 10% spandex

Built from personal experience.

When several close friends, including Jono, were diagnosed with cancer in their thirties, it changed everything. LifeJacket was born to make everyday skin protection simple, reliable and part of normal life.

GOOD TO KNOW.

What is the point of UV protection in clothing and are all long-sleeve shirts UV protective?

UPF refers to the Ultraviolet Protection Factor which is a UV rating system that’s used for fabrics, similar to SPF for cosmetics. It indicates how much UV radiation can penetrate the fabric of the top.

A fabric that’s rated UPF 50+ blocks 98% of the sun's rays, offering very high sun protection. UV protective clothing works by absorbing or reflecting the sun's UV radiation, preventing it from reaching your skin.

Long sleeve shirts with UV protection help shield your skin from harmful UV rays, reducing the risk of skin damage, heat stroke and skin cancer.

Not all long sleeve shirts offer UV protection. It depends on the fabric, yarn, weave and treatment used in the shirt's production.

You can read more about it here.

Is this clothing chemically treated to offer UPF protection?

No. All of our clothing offers the UPF50+ protection it does due to the natural properties of the fabrics we use. This means you can wear and wash it over and over again, safe in the knowledge it will continue to keep your skin protected and you comfortable.

When will I get my order?

We try to get every order out the same day up until 4pm during the week. From then, please allow 2-3 business days for your order to arrive.

Are your long-sleeve shirts with UV protection suitable for all outdoor activities including swimming?

Yes, our long sleeve shirts with UV protection are designed for a variety of outdoor activities, from hiking to swimming.

If you’re likely to be sweating or are particularly active, our active tops would suit you best. Our rash vest is ideal when in or by water. If you’re just outside in strong sun and want a more casual look, that’s where our casual tops would be best suited to your needs.

Who will be delivering my order and is there tracking?

We use a tracked service for nearly all of our deliveries. You will get an email from us when your order has been despatched which will include the tracking details.

How do your sizes compare to other brands?

We would say our sizing comes up true. This is a more relaxed fit than our other items and is oversized with a dropped shoulder. That shouldn't change the size you order and we would recommend ordering your usual size. If in any doubt check out the size guide towards the top of the page or give us a shout.

Can I return the product if I don't like it?

We’re happy to exchange or refund any clothing you're not 100% happy with. Just make sure it’s unworn and in perfect condition. To start a return, head to Returns and exchange and follow the instructions.

Who is LifeJacket for?

We're for anyone who wants to look after their skin and perhaps learn a little more about how to best achieve that. Whether you're a professional athlete, weekend warrior, dog walker, gardener or commuter, the science remains the same. Our products cater for every personal preference and environment, so it's just about finding what works for you.

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Trusted by athletes, made for everyone