Simple answer, don't buy their fly rugs, had 8 last year for our horses and none of them lasted, wrong sizes, one surcingle came off on the first day, no belly flap- yet the ebay guy i bought them off said he had loads of Gallop returned back and that Gallop wouldnt refund him. Naturally i left...
Gallop rugs are cheap and you get what you pay for bit like Rhinegold, their fly rugs let me down badly last year so im sticking with Shires, although my sister had a Sheldon one and swears by it.
Knightrider rugs are average in my opinion, they are not as good as they used to be, whereas the Sheldon one i have now is fantastic, nice deep fit, wears well and i would strongly recommend this one.I have other Sheldon stuff too and it's all good.