Magnetic Letter Opener.Â The simplest and safest way to open the post. Makes opening envelopes so easy.Â Ideal for adults of all ages, and especially good for sufferers of arthritis, the visually impaired or the elderly. Identical to the Standard Letter Opener but with the addition of a magnet on the back. Easy to stick to the fridge or a filing cabinet so you always know where to find it. Keep away from younger children.