I'm looking for a cover I can use to keep my road bike protected outdoors for the summer.  I bought one from Amazon that cost around £10, and which is useless-too tight and very flimsy.

Has anyone any experience of this Topeak cover, or can suggest any other I might try that are robust, waterproof and big enough to fit a pretty standard size bike with drop bars.

Any suggestions gratefully accepted!

Much as I loath them, Tesco Direct I believe do something cheap, 3-5 off the top of my head.

Alternately you could just get some thick plastic sheeting from a hardware shop/DIY shop which be even cheaper still.