A gradient rugby sweater? Nay, a neutrino gradient rugby. Made from merino. And what of this knitted jumper? From Scientific American: A neutrino is a subatomic particle that is very similar to an electron, but has no electrical charge and a very small mass, which might even be zero. Neutrinos are one of the most abundant particles in the universe. Because they have very little interaction with matter, however, they are incredibly difficult to detect. Fantastic. Anyway, what a great piece of winter warmer merino knitwear. Men's Knitted Wool Jumper Features: Long Sleeve Polo Shirt Material: 100% Merino Wool Colour: Black Multicolour with Red & Yellow Fit: Regular Fit Quality winter knitwear Google Neutrinos - interesting stuff Model is 6'1" and wears a size M. Our mission at Percival is always to make quality garments at prices that our demographic can afford. This means sometimes we make abroad at factories we trust. This is made by some of the master chunky knit crew machines in China. Made from 100% merino wool. Hand wash in cool water, dry flat, iron on a low heat. Do not bleach. No tumble drying here please, reshape whilst damp and please dry flat. Or don't get it dirty. EZ.