Introducing the all-new upgraded Beneunder Loose-Fitting Sunscreen Arm Sleeve, featuring original yarn sunscreen material with a UV blocking rate of ≥99%, maintaining UPF50+ sun protection even after multiple washes. The loose-fitting design of the sleeves ensures effective breathability and heat dissipation, preventing stickiness even during sweating. With dual-material splicing, the sleeves offer a spacious and comfortable fit, while the built-in finger holes provide added convenience and flexibility. Adjustable magic tape at the cuffs allows for a customized fit to accommodate various needs.