Decent budget waterproofs

Sports Direct sell Muddy Fox gear thats generally heavily discounted. I picked up a pair of waterpoof trousers with decent sealed zips and velcro adjustment on the ankles/calves for £19 when they should have been £50. Selection available can bea bit random but it's worth a look.

are those muddy fox trousers any good, are they fully waterproof, and are they long in the leg, so they don't ride up when you sit down?