RFID Sling Bag, Crossbody Sling Backpack, Small Chest Shoulder Bag for Hiking Outdoor RFID PROTECTION:Back hidden RFID signal blocking pocket, to protect your ID card, bank card, or phone from getting scanned and stolen. And protect your information security in public places. MULTIFUNCTIONAL POCKET: The size of the sling bag is 19 x 10 x 38 cm / 7.5 x 4 x 15 inches, good enough to accommodate the items you need. A hidden security pocket on the padded back can hold your passport. 2 side pockets fit a water bottle or folding umbrella. REVERSIBLE AND BREATHABLE SHOULDER STRAP: Designed with one right / left easily switchable and adjustable padded strap and breathable back pad. The adjustable strap range is 55 - 105cm / 21.5 - 41.5 inches. Which can hold the phone screen size under 7 inches easily. SUPERIOR MATERIAL: This sling backpack is made of water-resistant polyester fabric. Bar-Tacks Processed at the seam will provide extra strength and long-lasting performance. Durable two-way SBS zippers are abrasion-resistant and ensure secure closure. MULTIPURPOSE DAYPACK: This crossbody backpack with vibrant colors is the perfect companion when you are out. Suitable for travel; day hikes; daily walk-around; cycling; excursions; sports; camping and shopping