GRAYL
Mission EXP Hip Pack - 4.5L
Mission EXP™ Hip Pack – 4.5L
Rugged Modular Hip Pack – Built for Water, Gear, and Everyday Adventure
Product Description
The Mission EXP™ Hip Pack – 4.5L isn’t your average waist pack. Built from bombproof recycled nylon with weather-resistant YKK Aquaguard® zippers and premium hardware, this pack is engineered to haul your essentials into the backcountry, across the desert, or through city streets without compromise.
Every detail is purpose-built: dual Expanse BottleDrop™ Pockets expand to carry Grayl purifiers, bear spray, or extra gear; the BottleLock® system clamps down bottles and keeps them locked in even when you’re scrambling or on the move. Inside, a fully kitted organization system gives every piece of gear its place—mesh zip pockets, stretch slots, and a concealed valuables pocket keep order when the rest of the world is chaos.
On the outside, MOLLE panels, a Velcro loop field, and a steel O-ring let you mount pouches and accessories for rapid grab-and-go. The heavily padded mesh lumbar belt distributes weight comfortably, even when fully loaded, with dual zippered wing pockets for fast-access storage. At 4.5 liters (expandable to 6.5L), it’s the perfect size for water, tools, comms, and everyday essentials—without slowing you down.
The Mission EXP isn’t a lifestyle bag. It’s overbuilt, field-proven kit designed to take a beating, keep your gear squared away, and still be ready for more.
Built for Outdoor Utility and Modular Carry
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Durable Recycled Fabric – 500D & 1000D coated nylon outer shell, bluesign® approved
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Expanse BottleDrop™ Pockets – Dual stretch-woven expandable pockets fit Grayl bottles, windbreakers, or bear spray
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BottleLock® Tie-Down System – Non-slip PVC coating secures Grayl bottles or extra gear
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Internal Organization – Triple-zippered main compartment with mesh pockets, card slots, key leash, and concealed valuables pocket
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MOLLE + Velcro Expansion – Front panel and metal O-ring integrate with G-Mod Velcro Pouches and other accessories
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Comfortable Fit – Heavily padded mesh lumbar belt with dual arc zipper pockets, adjustable to 54 in.
Field-Proven Advantages
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Designed for adventurers, overlanders, and travelers carrying Grayl filtration systems
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Weather-resistant YKK Aquaguard® zippers keep gear secure in wet conditions
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Compact size expands from 4.5L to 6.5L with deployable BottleDrop™ Pockets
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Backed by a 10-year warranty on workmanship and materials
Specifications
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Capacity: 4.5L (274 cu in), expandable to 6.5L (396 cu in)
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Dimensions: 6.75 x 12.5 x 4.75 in (17 x 32 x 12 cm)
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Weight: 1.4 lbs (631 g)
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Waist Belt Circumference: Fits waists 28–54 in (71–137 cm)
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Outer Shell: 500D & 1000D recycled coated nylon (bluesign® approved)
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Lining: 210D HD recycled coated nylon (bluesign® approved)
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Pockets: Dual Expanse stretch-woven, concealed zip, mesh internal pockets
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Hardware: YKK Aquaguard® #5 & #8 reverse coil water-resistant zippers
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Systems: BottleLock® non-slip tie-down, MOLLE & Velcro expansion panel
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Country of Origin: Vietnam
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Warranty: 10 years, workmanship and materials
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Care: Hand wash only, drip dry
FAQ
Can it fit a Grayl water bottle?
Yes. The Expanse BottleDrop™ Pockets and BottleLock® system are specifically designed for Grayl bottles.
How much gear does it hold?
The 4.5L main compartment expands to 6.5L with BottleDrop™ pockets, providing ample room for water, essentials, and modular pouches.
Is it waterproof?
It is water-resistant, built with coated recycled nylon and YKK Aquaguard® zippers, but not submersible.
Product information
Stay Ready Outdoors — Return & Refund Policy
Last Updated: August 15, 2025
At Stay Ready Outdoors, we stand behind the quality of our products and want you to be completely satisfied with your purchase. If you need to return an item, please review our policy below.
Returns
We offer a 30-day return policy, meaning you have 30 days from the date you receive your item to request a return.
Return Eligibility
To qualify for a return, your item must be in like-new condition, meeting the following criteria:
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Unworn, unwashed, and with all original tags and stickers still attached.
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Free of any scents like perfume, cologne, or smoke.
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Free of any marks, stains, or pet hair.
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In its original packaging, including all accessories.
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Must include proof of purchase (receipt or order number).
How to Start a Return
To initiate a return, email us at crquarto@stayreadyoutdoors.com with your order details. Once approved, you’ll receive return instructions and a prepaid shipping label. The cost of return shipping will be deducted from your final refund.
Important: Items sent back without prior approval will not be accepted.
Return Address: Stay Ready Outdoors ATTN: Returns 15236 Las Flores Ave La Mirada, CA 90638
Damaged, Defective, or Incorrect Items
Please inspect your order upon arrival. If your item is damaged, defective, or incorrect, contact us at crquarto@stayreadyoutdoors.com within 7 days so we can evaluate and resolve the issue promptly.
Non-Returnable Items & Exceptions
Some items are non-returnable, including:
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Briefs (due to hygiene reasons)
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Sale items (these sales are final)
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Gift cards
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Engraved or customized items
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Perishable goods (e.g., food)
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Personal care items (e.g., hygiene or beauty products)
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Hazardous materials (e.g., flammable liquids or gases)
Food or Drink Products – All Sales Final
Due to the nature of long-term food storage, all sales on food or drink products are final. We do not accept returns or exchanges on food or drink products for any reason including incorrect order, change of mind, or shipping delays. Replacements will only be issued in the event of a verified manufacturing defect or shipping damage, which must be reported within 5 days of delivery with supporting photo documentation.
Exchanges
The fastest way to exchange an item is to initiate a return for the original item and, once the return is accepted, place a new, separate order for the item you want.
European Union Customers – 14-Day Cooling-Off Period
If your order was shipped to the European Union, you have the right to cancel or return it within 14 days of delivery, for any reason. To be eligible, items must be unused, with original tags and packaging, and include proof of purchase.
Refunds
Once we receive and inspect your return, we will notify you of its approval. If approved, we will issue a refund to your original payment method within 10 business days, less the cost of return shipping.
Please Note:
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It may take additional time for your bank or credit card company to process and post the refund.
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If you haven’t received your refund within 15 business days of our approval, please contact us at crquarto@stayreadyoutdoors.com.
Need Help?
If you have any questions about your return or refund, we’re here to help:
📧 Email: crquarto@stayreadyoutdoors.com