UPF 50+ Active Tee

Size	To fit chest (cm)	Pit to pit (cm)	Length (cm)
S	90–96	49	68
M	96–102	52	70
L	102–108	55	73
XL	108–114	58	75

Size	To fit chest (cm)	Pit to pit (cm)	Length (cm)
S	90–96	51	68
M	96–102	54	70
L	102–108	57	72
XL	108–114	61	74

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

Size	To fit chest (cm)	Pit to pit (cm)	Length (cm)
S	90–96	47	75
M	96–102	50	77
L	102–108	53	79
XL	108–114	56	81

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

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

Product information

We ship to the UK and Channel Islands using a Royal Mail tracked service.

We're happy to exchange or refund any clothing you're not 100% happy with.

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Supplier for Paris

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Supplier to the ECB

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Supplier for Paris

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Supplier to the ECB

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You're training hard. Your protection shouldn't hold you back.

We've been there too.

Sunscreen slides off when you sweat.

That means every hour out there, you're less protected than when you started - and most people have no idea.

You're overheating out there.

Many technical and cotton tees hold heat against your skin. The longer a run goes, the harder your body works just to cool down - pace drops, effort climbs, and you're fighting your kit before you're fighting the course.

Treated UPF washes out.

Chemically-treated UPF washes out. After 20 washes, you're back to minimal protection.

Why we built this

Train hard without stopping to reapply.

Most sun protection is designed for the beach - something you apply once and then mostly ignore. We built this tee for people who are actually moving: running intervals, grinding out long rides, sweating through a summer session. The kind of training where stopping to reapply isn't just inconvenient - it just doesn't happen. UPF 50+ protection woven directly into the fabric means it doesn't wash off, sweat off, or run into your eyes. You put it on and forget about it. We built it because we live this way too.

What this means for you

UPF 50+ built into the fabric.

Protection woven in, not chemically added. Blocks 98% of UV rays wash after wash.

What this means for you

Moisture-wicking and quick-dry.

Moves sweat away from your skin. Dries fast so you stay comfortable.

What this means for you

UPF that lasts - wash after wash.

UPF 50+ that doesn't wash out - ever. Our protection is built into the formula, not sitting on the surface. Trusted by Marathon des Sables winners. Built for conditions that break everything else.

How this fits

Straight cut. Athletic fit.

A close-fitting, athletic cut designed to move with you. Unisex, it's cut without excess fabric so it doesn't bunch or distract during activity. If you're between sizes or prefer a looser look, size up. Check the size guide for chest and length measurements if you're unsure.

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

UPF 50+ Fabric (72% polyester, 16% elastane, 12% rayon): blocks 98% of UV rays. Moisture-wicking pulls sweat away and dries quickly. Athletic fit tha'

OTHER USEFUL INFO

Machine wash 30°C | Hang to dry | UPF structural not chemical | Available S/M/L/XL

FABRIC INFORMATION

72% polyester, 16% elastane, 12% rayon

Comfortable and good sizing. Felt protected in the very strong Caribbean sunshine. Worked well with additional Lifejacket sunscreen.

Chris H - Caribbean tested

Bought 2 active tees white and blue for a trip to the Canary Islands. Great for by the pool or beach and smart enough to wear into a restaurant.

Stuart A - Canary Islands tested

A tighter fit than the casual tee so ordered a large in the active but medium in the casual. Nice fit and will be my go to for holiday sport wear.

David A - Runner

UPF 50+ Active Tee

UPF 50+ Active Tee

UPF 50+ Active Tee

Here's how we're different.

UPF 50+ Active Tee	Big brand wicking tee
UPF 50+ lab tested and certified Guaranteed to block 98% of UV. We've tested it.	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 t-shirt. 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.

AS FEATURED IN

GOOD TO KNOW.

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.

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.

Where do you ship?

We ship to the UK and Channel Islands using a Royal Mail tracked service.

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.

WHAT OUR COMMUNITY SAYS.

4.9

Rated 4.9 out of 5 stars

Based on 51 reviews

Total 5 star reviews: 47 Total 4 star reviews: 4 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0

Product QualityRated 4.9 on a scale of 1 to 5

SizingRated -0.1 on a scale of minus 2 to 2

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51 reviews

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CW
catherine w.
Verified Buyer
7 months ago
Rated 5 out of 5 stars
Active Tee
Lovely feel to the fabric and nice to wear.
Normal sizing.
Love the colour. Washes well.
Was this helpful?
CH
Chris H.
Verified Buyer
1 year ago
Rated 5 out of 5 stars
Perfect for the strong Caribbean sunshine.
Comfortable and good sizing. Felt protected in the very strong Caribbean sunshine. Worked well with additional Lifejacket sunscreen. Good purchase!
Was this helpful?
SA
Stuart A.
Verified Buyer
1 year ago
Rated 5 out of 5 stars
Great t shirt
Bought 2 active tees white and blue for a trip to the Canary Islands. I’m not a fan of suntan cream and sometimes when your on You’re own it’s difficult to do your back. I’m 5ft 7 & 10 stone and I purchased small the fit was great and they were so comfy to wear to the point you felt like you were not wearing a top great for by the pool or beach and smart enough to wear into a restaurant Great product. Been looking at the long sleeve ones but just need more selection of colours.
Was this helpful?
DA
David A.
Verified Buyer
1 year ago
Rated 5 out of 5 stars
My go to for outdoor sportwear
A tighter fit than the casual tee so ordered a large in the active but medium in the casual cotton. Nice fit and less ironing required and will be my go to for holiday sport wear
Was this helpful?
RE
Richard E.
Verified Buyer
1 year ago
Rated 5 out of 5 stars
Richard E
Fantastic shirt good quality soft and perfect fit. The only thing that let it down was the delivery. I don’t know why companies use the post office they are absolutely rubbish for delivering.
Was this helpful?

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Trusted by athletes, made for everyone

UPF 50+ Active Tee

Product information

Trusted by Olympians. Made for everyone.

You're training hard. Your protection shouldn't hold you back.

Sunscreen slides off when you sweat.

You're overheating out there.

Treated UPF washes out.

Train hard without stopping to reapply.

UPF 50+ built into the fabric.

Moisture-wicking and quick-dry.

UPF that lasts - wash after wash.

Straight cut. Athletic fit.

PROTECTION IS BUILT IN.

Here's how we're different.

Wear.

Combine.

Pro Tip.

GOOD TO KNOW.

WHAT OUR COMMUNITY SAYS.

READY TO GET OUTSIDE?

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