Our reigning roof box champion, the Kamei 510, holds on to its crown. While its stablemate, the Corvara S 390, runs it close, it can’t quite justify its higher price. If you have less to spend, Hapro’s Traxer 6.6 is a cheaper, simple-to-fit solution. This is an excellent option if you have two storage problems – home and away. For example, do you really need a roof box for driving holidays and getaways, but don’t have anywhere to store a hard-shell box at home? Well this soft box, made from water-resistant tarpaulin quality material, is a real problem solver. Fitting a roof box to those roof bars is a fairly simply process and the instructions that come in the box should walk you through it step-by-step. Keep in mind the weight capacity of your roof bars, the roof box itself and your car roof. Roof boxes are great if you need to carry more stuff than you can fit in your car. Read our guide for the lowdown on what you should consider before buying one! Fits cross bar diameter from 33-90 mm, required cross bar to cross bar distance 570 mm min. and 840 mm max.If you are searching for a cargo box without busting your budget, then we highly recommend this option