Everything has some sun protection. A totally transparent sheet of glass blocks some sun light. If you walk around all summer in a pair of jeans I bet you'll not be touched by sun light.
SPF IIRC is just a measurement of how much UV something passes. There are also two different numbers. A and B. It's also not a straight forward measure. So factor 50 is a lot better then 10 but not much better then 30.
Rohan Men's Overland Shirt
Taking advantage of a battery of advanced technology, our Overland Shirt is the ultimate warm-weather trekking, walking and travel shirt.
It’s made from a supremely functional blend of polyamide and polyester which combines a surprisingly light weight with reassuringly high levels of abrasion and tear resistance.
It also offers a very good (UPF40+)* level of protection from the harmful effects of UV radiation.
Our expedition-proven Dynamic Moisture Control™ treatment wicks moisture in a flash and ensures the shirt feels cool and comfortable next to your skin. Not such a big deal in Britain – but absolutely essential in the Tropics.
The shirt’s been treated with our advanced, and very durable, BiteGuard™ finish which minimises both insect landings and bites.
Washing the shirt is a simple matter of dunking it in a bucket of water and hanging it up from the nearest branch – clever Dryloops™ in the hem mean you can leave the clothes pegs at home. And, if all you’ve got in your camp ‘laundry’ is a nail in the wall, you can just hang the shirt from the locker loop stitched into the rear yoke. It’ll comfortably dry overnight and, needless to say, it doesn’t require any ironing.
The shirt features two chest pockets which are secured with buttons. Behind one of the chest pockets is a generous security pocket which is closed with a vertical zip.
The whole shirt is constructed using our Minimum Layer Construction™ techniques to maximise breathability, reduce weight and increase comfort.
*A Note on Sun Protection
All Rohan garments which carry our sun protection icon, have been tested in accordance with recognised international standards for ultraviolet radiation protection. As a guide to the level of protection offered to covered areas, garments are awarded a rating of either UPF 20+ or UPF 40+. Protection may be significantly reduced with extended wear or if the garment is stretched or wet; the reduction of associated health risks will vary with other factors such as skin type or individual medical history.
Fabric: 71% polyamide, 29% polyester with BiteGuard™ and DMC™.
Weight: 240g
Pack Size: 760ml
Drying Time: 2 hours