"Carson" caters for the needs of the elderly. Because we found that the general trolley design in the market fails to ease the burden on the elderly. The idea is to improve the lives of the elderly. 1. Add the function of lifting and lowering, so that the elderly do not need to bend down to pick up or put down items.> 2. The wheel adopts a three-wheeled wheel, which makes it easier for the elderly to use when walking the stairs.> 3. Add a cover so that the elderly can sit and rest anytime and anywhere.> 4. The brake function is added to make it safer for the elderly to sit down.> 5. The design will be mainly square, in order to increase the pocket opening of the shopping cart. It is easier for the elderly or users to put some bulky items.