【Vacuum Compression Tech – Pack Lighter & Smarter】One-click pump reduces clothes volume by 50%, turning bulky items into a compact carry-on. Ideal for flights, business trips, and weekend trips—travel tidy and stress-free. 【Expandable 35L→60L – Carry-On Size, Suitcase Space】Expands from 35L to 60L with vacuum compression, fitting airline size limits (20"×12"×7.8") while holding as much as a 24” suitcase. Avoid baggage fees—compress and go. 【 Dry/Wet Separation&Effortless Organization】This travel backpack has three main compartments, a waterproof wet/dry section, and a padded laptop sleeve (fits 17.3" laptop ) to help keep gear organized—whether it's clothes, gym items, cables, or your tablet. 【Anti-Theft & TSA-Ready Security】This vacuum compression backpack has hidden RFID-safe pocket guards for passports and cards, while the TSA-approved lock ensures smooth security checks. Explore worry-free with built-in theft deterrence. 【Durable &Comfort Design】Waterproof nylon and odor-resistant TPU fabric withstand rough journeys. Breathable mesh straps and ergonomic padding distribute weight evenly—even at full capacity—for all-day comfort. 【Attention for Zipper of Vacuum Bag】Vacuum seal bag adapted high-density zipper. To make sure the sealing function and not let the air come in, it is a little difficult to open, so please grab the vacuum bag with one hand, and use big power to open the zipper. Vacuum Travel Backpack