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Finntrail · Shirt
Finntrail JERSEY Red 6600 UPF 50 Long-Sleeve Shirt
A long-sleeve shirt with UPF 50 protection against UV rays. The strong, moisture-repellent Jersey fabric shields your skin from the sun and keeps your body dry on a hot day outdoors. The UPF 50 fabric blocks harmful sun rays, and the long sleeves fully cover your arms, so your skin stays protected even during long hours outside. The moisture-repellent fibre stops sweat from building up and keeps your body cool. The relaxed fit is comfortable all day, and the O-shaped collar sits close at the neck. You can wear the shirt over protective clothing or as a single layer.
Who it is for
Made for summer use in the sun, when you need to protect your skin from UV rays and fully cover your arms without reaching for a separate layer or cream.
- •For anglers and outdoor enthusiasts on a hot, sunny day.
- •For travel and hiking, when you spend long hours in the sun.
- •For sport and active rest by the water.
When it shines
Best on a hot, sunny day outdoors or on the water, when you spend long hours in the sun and want to protect your skin with a single garment: UPF 50 blocks UV rays, the long sleeves fully cover your arms, and the moisture-repellent fabric keeps your body dry.
Technical specs
Materials & technology
UPF 50 sun protection
The fabric blocks harmful UV rays and protects your skin from burning during long spells in the sun or on the water. The long sleeves fully cover your arms, so there is no need for a separate cream or layer.
Moisture-repellent Jersey fabric
The strong Jersey fabric repels moisture, stops sweat from building up and keeps your body cool on a hot day. The fabric is durable and lasts well even under active use.
Relaxed fit with an O-shaped collar
The relaxed fit is comfortable all day, and the O-shaped collar sits close at the neck. You can wear the shirt over protective clothing or as a single layer.
How it differs from a plain shirt
Care
Wash inside out, cool, on a gentle setting, without bleach or fabric softener, to keep the moisture-repellent finish. Do not iron the print or logo directly. Dry at room temperature, away from radiators.
Frequently asked questions
How does UPF 50 protection work?
The fabric blocks harmful UV rays and protects your skin from sunburn during long spells outdoors or on the water. UPF 50 means a very high level of protection.
Is it suitable for a hot day?
Yes. Although the sleeves are long, the fabric repels moisture and keeps your body cool, and the long sleeves actually shield your skin from direct sun, so the shirt is comfortable on a hot day outdoors.
How does it differ from the 6601 model?
This model has UPF 50 protection against UV rays, while the 6601 has no declared UPF. If you want certified sun protection, choose this model.
Can it be worn as a single layer?
Yes. The relaxed fit is comfortable worn as a single layer directly on the skin or over protective clothing, whichever suits your activity.
How do I pick a size?
The fit is relaxed. Choose your usual size, or go down if you want it closer-fitting. If unsure, message us and we will help.
What about warranty and returns?
We offer a 2-year warranty, you can return within 30 days, and delivery from our Vilnius warehouse is free with a tracking number.
Peace of mind
Warranty
2-year warranty. We resolve manufacturing defects quickly, without bureaucracy.
Returns
Not right? Return within 30 days. We’ll help you pick another size.
Delivery
Free delivery from our Vilnius warehouse with a tracking number.
Not sure about the size or whether it suits your activity? Message us, we’ll reply quickly and honestly.
And if you want an answer even faster, ask the Finntrail AI assistant (the ASK button on the page), you’ll usually get a reply right away.
Product Care Instructions
- Wash membrane clothing only with special detergents, such as Mountval Wash & Care, at a temperature no higher than 30 °C, without fabric softeners or bleach.
- After washing, restore water repellency using Mountval Waterproofing Refresher (wash-in) or a spray-on impregnation, following the product instructions.
- After impregnation, allow the product to dry naturally.
- Repair minor membrane damages with special glue, such as Aquaseal / Aquasure, only on clean and dry surfaces.
- Clean boots by hand, do not use a washing machine; if needed, use impregnation products designed for technical footwear.
Regular care helps maintain water repellency, breathability, and prolongs the product's lifespan.
For more information on how to clean Finntrail clothing and boots after use, see here.
Product delivery
We receive goods at our central warehouse twice per week: on Tuesdays and Fridays.
Depending on the order submission time, goods are included in the corresponding delivery cycle:
Order submission time Goods received Notes Until Tuesday 09:00 Friday Standard schedule. Until Friday 09:00 Next Tuesday Orders placed after 09:00 are moved to the next cycle. Important Due to holidays, inventory checks or other circumstances, delivery may be delayed by 1–3 days.
- Orders are shipped the same day they arrive at the central warehouse.
- Delivery is available to all parcel lockers in Lithuania or by courier to your home.
- Delivery is free of charge.
Returns
Please inform us about a planned return by email at pagalba@finntrail.lt or by phone +370 614 98366.
- Products can be returned within 30 days from the date of receipt.
- The returned item must be unused, with all tags attached and in the original packaging.
- Returns are completely free.
- Together with the notification about the delivered parcel you will receive a return code allowing you to return the item via any parcel locker.
Available solutions after returning the product:- We will replace it with another size.
- We will suggest the most suitable alternative.
- The refund is issued within 1–2 business days after receiving the returned item.
Membrane waterproofing and breathability
Membrane fabric is usually described using two numbers, often separated by a slash: waterproofness and breathability. The first number indicates waterproofness, the second indicates breathability.
?Waterproofing
This is a sliding scale measured in mm that shows how high a column of water you can suspend over the membrane before it starts to let moisture through.
Waterproof Rating Conditions 0–10,000 mm Light rain, dry snow, light pressure. 11,000–15,000 mm Moderate rain, average snow, light pressure. 16,000–20,000 mm Heavy rain, wet snow, some pressure. 20,000 mm+ Heavy rain, wet snow, high pressure. ?Breathability
This is the amount of moisture by weight that can pass through one square metre of fabric over a period of 24 hours. It is commonly measured in g/m²/24 hrs.
Breathability Rating Level of Breathability 0–5,000 g/m²/24 hrs Low – light exercise. 5,000–15,000 g/m²/24 hrs Medium – medium to high energy activity. 15,000 g/m²/24 hrs+ High – vigorous sustained activity.
