I've got a JRC Stealth Brolley with the storm sides - brilliant bit of kit. Goes up in seconds, keeps the elements out on winter day sessions and is ideal for sleeping out under the stars in summer without bothering with a full bivvy. You don't even need the zip up front when the weather is warm. A full size bedchair fits easily inside. Shop around on line and you can get one for around £115 or the brolly only without the insert for about £65. Only draw back is that you need to buy the storm poles separately.