Abstract: A liner is disclosed for cushioning and protecting a bather from harmful contact with the walls of a bathtub while bathing. The liner can be used for bathing infants, children, elderly or physically disabled individuals. The liner typically includes chambers that reversibly adhere to the walls of the bathtub. The chambers can be filled with air, water, or a soft padding material. When the chambers are not inflated or otherwise filled, the liner is able to be folded into a compact condition for ease of storage and for travel. The liner can include at least one rim chamber to allow one to lean their elbows on the rim of the bathtub while bathing the bather, a faucet chamber for covering the water faucet system of the bathtub to protect the bather from a fall towards the faucet, or an arch that rises over the bathtub that can keep a child occupied while bathing.