Double Slider Template Template to give your cards an element of surprise. £4.49 Quantity: at £4.49 each Add To Basket Pull the right side of the card to reveal a design & extend the card to approximately twice its length. FREE A4 layout of the rocket shapes to be able to re-create the rocket as shown on the front cover. Easy to use. Photographic & full written instructions. Made from good quality polypropylene.