The ol200 top box from oxford is ideal for motorcycles riders who don39t want the hassle and inconvenience of having to carry an often hefty awkward and cumbersome motorcycle helmet around with them when not on the bike the ol200 is the 24 litre capacity model and has enough room to store one helmet the top box isn39t designed exclusively for use with helmets though and is ideal for storing and transporting shopping clothing and any other items made from high impact plastic the top b