Where the piece concept applies, generally, two pieces of checked baggage are allowed per passenger, each piece weighing a maximum of 32 kilos (70 lb) and measuring no more than 158 cm (62 in) when adding the dimensions: height + width + length.

For a 32 kg (70 lbs) checked bag, which is the maximum weight most airlines allow for a single piece due to health and safety regulations for baggage handlers, the standard "linear dimension" limit is 158 cm (62 inches). This is calculated by adding the height, width, and depth together (H+W+D). Typically, a large suitcase with these dimensions measures around 81 x 51 x 26 cm. While some airlines like British Airways or Emirates may allow larger total dimensions (up to 208 cm or even 300 cm depending on the route), 158 cm remains the global industry standard for "standard" oversized baggage. If your bag exceeds this size, it may be classified as "oversized" and subject to significant additional fees, even if it stays under the 32 kg weight limit. It is also worth noting that many "extra-large" suitcases sold in stores are specifically designed to meet this 158 cm threshold to avoid these penalties, so always measure your bag with the wheels and handles included before heading to the airport.