Arm sleeves
Protection from sun and elements: Arm sleeves, like those pictured, can offer protection from sun exposure, wind, and cold, especially during outdoor activities.
Skin protection: They can also help protect fragile or sensitive skin from minor abrasions, tears, or bruising, as well as covering tattoos or scars.
Warmth: Made from materials like cashmere or other fabrics, they can provide warmth to the arms, functioning as arm warmers, particularly in cooler temperatures or for specific styles like "ninja arm warmers".
Compression and support: Some arm sleeves are designed to offer compression, which can aid in muscle support during sports or help manage swelling.