Foil is a light thrusting weapon. It has a small circular hand guard which protects the hand. Épée is a thrusting weapon (heavier than the foil). It has a large circular hand guard that serves to protect the hand from touches. Sabre is a light cutting and thrusting weapon. The Sabre hand guard is specific because it is turned outwards, and connects the pommel with the base. It also aims at protecting the arm from touches.
Please note that the foil and saber lamés are different. A foil lamé is sleeveless, while a sabre lamé has sleeves and ends across the waist.
Wear one glove with a gauntlet for the weapon arm. It protects the hand and provides a good grip.