【Large Capacity & Durable Design】This Sambois zipper binder bag features sturdy 3-inch stainless steel D-rings, built for long-lasting use. Measuring 13.78 x 13.39 x 3.94 inches, it holds up to 700 sheets of A4 3-hole papers, ideal for class notes, homework and documents. Equipped with a front bottle pocket for easy access to your drink, plus a removable clear pencil pouch to keep writing tools neatly organized. 【Premium Waterproof 900D Oxford】Crafted from thickened high-density 900D oxford cloth, this zipper binder bag repels water and dust effortlessly. It features a seamless smooth zipper paired with durable metal ring buckles. The 3-inch zipper binder boasts excellent wear, tear and rain resistance. Plus, reinforced stitching greatly improves weight capacity to avoid tearing under heavy loads. 【All-in-One Multi-Compartment Storage Design】Designed for students and office users, this folio storage organizer features a secure Velcro inner sleeve to stow 13-inch laptops, tablets and notebooks. The front outer pocket keeps stationery within easy reach, while a built-in clear window slot lets you slide in your student card for quick visibility. The roomy back pocket provides extra capacity to hold school supplies, delivering tidy, separated storage for all your daily gear. 【Humanized Travel-Friendly Extras】This Sambois zipper binder bag adds thoughtful travel-friendly details for daily commutes and trips. The rear built-in luggage strap lets you slide it firmly over rolling suitcase handles to free your hands at airports or subway stations. The detachable shoulder strap features adjustable length and thick padded cushion to ease shoulder pressure during long-time carrying. All hardware buckles rotate 360° to avoid strap twisting, keeping your laptop, documents and supplies stable on the go. 【Portable Multi-Scenario Application】This 3-ring zipper binder is fitted with a removable padded shoulder strap and touch-fastener hand handle for flexible carrying. Lightweight and compact, it works great for college students and daily commuters across all scenarios. Suitable for ages 13 years and older Meet the Sambois 3 Inch D-Ring Zipper Binder Bag, your all-in-one portable storage solution crafted for students, office workers and daily commuters. Built to balance large storage capacity, reliable protection and versatile carrying design, this pink multi-pocket organizer combines premium 900D waterproof oxford fabric, multi-layer separated compartments and humanized travel details to streamline your school, campus and office routine. Boasting heavy-duty 3-inch stainless steel D-rings, this zipper binder holds up to 700 sheets of A4 3-hole papers to store homework, class notes and official documents neatly. Measuring 13.78 x 13.39 x 3.94 inches, it comes with a dedicated front water bottle pocket and a detachable clear pencil pouch to separate pens, markers and small stationery. Every storage demand is well catered to with independent specialized pockets. Durability and all-around protection are guaranteed with thickened high-density 900D oxford cloth that blocks water, dust and light splashes. Reinforced stitching, smooth seamless zipper and anti-rust metal hardware deliver outstanding wear, tear and rain resistance, while the reinforced load-bearing structure prevents ripping even fully packed. No more worrying about damaged documents, electronics or stationery on rainy days or busy commutes. Our all-in-one multi-compartment layout maximizes classified storage. A secure Velcro inner sleeve safely fits 13-inch laptops, tablets and notebooks to avoid sliding and scratches. The front exterior pouch offers instant access to study supplies, paired with a transparent ID window slot to display your student card at a glance. A spacious rear slip pocket holds extra school supplies, keeping all your daily gear sorted without mess. Designed for flexible carrying across all scenarios, this lightweight compact binder bag includes a touch-fastener PU hand handle and a detachable padded shoulder strap. The adjustable shoulder strap relieves shoulder pressure for long-time carrying, paired with 360° rotatable metal buckles to prevent strap tangling. A built-in rear luggage slip strap lets you attach the binder to rolling suitcases perfectly for school trips, business travel and daily transit. Suitable for middle school, junior high, senior high and college students, as well as daily office commuters, this pink laptop carrying case integrates document organizer, stationery storage and laptop portfolio in one lightweight portable bag. If you are looking for a sturdy, waterproof, multi-pocket zipper binder with shoulder strap and bottle holder, the Sambois D-ring binder bag is your ideal daily storage companion.