Bandages are flexible dressings that secure wound coverings, provide compression, support sprains, or immobilize injuries. Adhesive bandages (Band-Aids®) feature a central non-stick pad with hypoallergenic tape for minor cuts/abrasions; waterproof variants protect post-procedure sites. Roller/crepe (elastic cotton) wrap limbs for venous ulcers/sprains (short-stretch low resting pressure, long-stretch high compression); triangular sling arms or pad heavy bleeding; cohesive self-adhere without residue/stickiness; gauze (4x4) secure primary dressings; POP/fiberglass casts immobilize fractures.