Trouser Elastics. Also known as Twists, Ankle Elastics or even Trouser Blousers, to keep your trousers neatly over your boots and not half way up your leg! •Trouser Twists •Twin Pack - 2 Pair •Elasticated Twists with hook fastening •Used to secure trouser bottoms over boots •Olive green colour. For anyone who needs to keep their trousers down in the correct place around the boot/shoes.