There is disclosed a capsule for the preparation of a beverage using an extractable and/or dissolvable product and a quantity of hot and/or pressurized liquid. The capsule comprises a circumferential wall having on one end a bottom adapted to allow entrance of the liquid, and on an opposite end a lid closing said end of the circumferential wall. The circumferential wall, bottom and lid enclosing an inner space containing the product. At least one of the lid and/or bottom comprises at least one first portion and at least one second portion separated by at least one slit and having different moving mechanics when under pressure. At least a layer of tearable material covers said slit.