Armsavers are like 'gaiters' for your arms. They protect arms from above your elbow to your wrist. They make it easy to work around roses, evergreens and any thorny or sticky plants (junipers?) or just wear them to keep your sleeves dry. Armsavers are made from washable nylon. They are very lightweight, waterproof and comfortable. They keep thorns, plant poisons and UV rays at bay. I just discovered another use...it saves long sleeves from getting covered with pollen if you're working around flowers like lilies.