Buy now £199.99, Dyson.co.uk Weight: 6.9kg 6.9kg Air wats: 90 90 Cordless? Not so with the Dyson small ball allergy; the main weapon in its dander and dust-dispatching arsenal is a powerful motor which drives the vacuum’s brushes more deeply into the carpet, enhancing its ability to remove allergens. One thing which became immediately clear is that the Dyson small …