Our built-in compression pocket expels excess air from your clothes using a compact hand pump and a one-way valve.

• Step 1: Fold or roll your garments and place them in the inner compression pocket.
  
• Step 2: Zip it closed and connect the mini pump to the valve.
  
• Step 3: Pump for 20–60 seconds (depending on volume) until the pocket becomes firm.
  
  By removing trapped air—not squeezing fabric—the pack reduces bulk dramatically while keeping items protected.
  

No—when used correctly, wrinkles are minimized. The compression pocket is designed to keep items flat and evenly pressed. For best results:

• Fold garments smoothly (or use the roll method for tees and knits).
  
• Place delicate items between flatter layers (e.g., a T-shirt over a shirt).
  
• Use the included anti-crease panel area for shirts and trousers.
  
  Most users report arriving with fewer wrinkles than with traditional packing.

No problem. The system is TSA/airport-friendly:

• You can open and reseal in seconds.
  
• The valve releases air safely and silently.
  
• After inspection, simply close the zipper and give the pump a few strokes to re-compress.
  
  Tip: keep the pump in the top quick-access pocket before security for a faster re-pack.

Yes. The Grenth Pack was engineered for cabin rules. Our cabin configuration (approx. 40 × 30 × 15–20 cm) fits the most common international carry-on size box.

• Depth is adjustable thanks to compression, so it stays sleek once packed.
  
• Always check your airline’s current policy—some low-cost carriers use stricter dimensions for “personal items.”
  
  If you follow our packing guide, you’ll be within the typical cabin size standards.

With vacuum compression you can increase usable capacity from ~29L up to ~60L (contents and fabric types vary). In practice, most travellers fit:

• 2–3 extra outfits or bulky items like hoodies and puffers
  
• Additional underwear, socks, and gym gear
  
  This is space you normally lose to trapped air—now reclaimed.

Size and weight are different rules. Grenth Pack helps you pass size checks; weight still depends on what you pack and your airline’s allowance (often 6–12 kg for cabin).

• We include a quick weight checklist inside the pack.
  
• If you’re close to the limit, keep heavier items (chargers, power banks) in your jacket or pockets before boarding, if permitted.
  
• Consider wearing your heaviest shoes/jacket on travel days.

The pack is built with reinforced stitching, high-tenacity fabrics, and heavy-duty zippers. For comfort and longevity, we recommend keeping total carry weight within your airline’s cabin limit (typically 6–12 kg). The structure can handle more, but your shoulders—and airline policy—will thank you for staying within allowance.

Yes, the mini hand pump is included and does not require batteries. It’s ultra-light, quiet, and packs into a dedicated sleeve. You can also use the one-way valve to squeeze out air manually in a pinch.