GRAYL
Mission EXP Hip Pack - 4.5L
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Mission EXP™ Hip Pack – 4.5 L
Rugged Modular Hip Pack – Built for Water, Gear, and Everyday Adventure
Quick Facts
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Capacity: 4.5 L (274 cu in), expandable to 6.5 L (396 cu in)
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Weight: 1.4 lb (631 g)
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Dimensions: 6.75 × 12.5 × 4.75 in (17 × 32 × 12 cm)
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Waist Belt: Fits 28–54 in (71–137 cm)
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Material: 500D & 1000D bluesign® approved recycled coated nylon
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Zippers: YKK Aquaguard® #5 & #8 reverse coil water-resistant
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Warranty: 10-year workmanship and materials
Product Description
The Mission EXP™ Hip Pack – 4.5 L isn’t your standard waist bag. Engineered for overland, trail, and travel environments, it’s made from bombproof recycled nylon with weather-sealed YKK Aquaguard® zippers and premium hardware to withstand years of punishment.
Dual Expanse BottleDrop™ Pockets expand to carry GRAYL purifiers, bear spray, or extra gear, while the BottleLock® System keeps bottles locked in place even when you’re scrambling or on the move. Inside, multiple mesh pockets, stretch slots, and a concealed valuables pocket organize essentials without wasted space.
Outside, MOLLE panels, a Velcro loop field, and a steel O-ring enable modular expansion. A heavily padded mesh lumbar belt distributes weight comfortably, even when fully loaded, with dual zippered wing pockets for small-item access.
Compact, expandable, and field-ready—the Mission EXP is purpose-built to keep your gear secure from city to summit.
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 pockets fit GRAYL bottles, windbreakers, or bear spray.
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BottleLock® Tie-Down System: Non-slip PVC coating secures GRAYL bottles or gear under motion.
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Internal Organization: Triple-zip main compartment with mesh pockets, card slots, and concealed valuables pocket.
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MOLLE + Velcro Expansion: Front panel and steel O-ring accept G-Mod Velcro Pouches and other accessories.
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Comfortable Fit: Heavily padded mesh lumbar belt with dual arc zip pockets; adjustable to 54 in.
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Weather Protection: Water-resistant zippers and coated fabric shed rain and grit.
Field-Proven Advantages
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Designed for adventurers, overlanders, and travelers carrying GRAYL filtration systems.
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Compact form factor expands from 4.5 L to 6.5 L for adaptive carry.
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MOLLE & Velcro integration enables rapid loadout changes.
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Backed by a 10-year manufacturer warranty on workmanship and materials.
Specifications
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Capacity: 4.5 L (274 cu in) / Expandable 6.5 L (396 cu in)
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Dimensions: 6.75 × 12.5 × 4.75 in (17 × 32 × 12 cm)
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Weight: 1.4 lb (631 g)
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Waist Belt: 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, and mesh internal pockets
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Hardware: YKK Aquaguard® #5 & #8 reverse coil zippers
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Systems: BottleLock®, MOLLE & Velcro expansion panel
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Origin: Vietnam
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Warranty: 10 years
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Care: Hand wash only, drip dry
FAQ
Q: Can it fit a GRAYL water bottle?
A: Yes. The Expanse BottleDrop™ Pockets and BottleLock® System are specifically engineered for GRAYL purifiers and bottles.
Q: How much gear does it hold?
A: The main compartment offers 4.5 L of storage and expands to 6.5 L with the BottleDrop™ Pockets deployed.
Q: Is it waterproof?
A: It is water-resistant, constructed from coated nylon and sealed YKK Aquaguard® zippers, but not submersible.
Compact yet capable, the Mission EXP™ Hip Pack is a modular, weather-resistant carry solution built for those who demand more from their gear than a place to stash snacks.
Product information
Stay Ready Outdoors — Return & Refund Policy
Last Updated: February 27th, 2026
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 info@stayreadyoutdoors.com with your order details. Once approved, you’ll receive return instructions and a prepaid shipping label.
For standard parcel items:
The cost of return shipping will be deducted from your final refund.
For oversized or freight items:
Return shipping is the customer’s responsibility (see Oversized and Freight Item Returns below).
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
Oversized and Freight Item Returns
Due to the size, weight, and freight handling requirements of certain products, free or prepaid return shipping does not apply to oversized or heavy items.
This includes, but is not limited to:
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Rooftop tents
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Pro Eagle jacks
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Large recovery equipment
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Freight-shipped or oversized products
Important details:
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Customers are responsible for return shipping costs on these items unless the product arrives damaged, defective, or incorrect.
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Original outbound shipping charges (if any) are non-refundable.
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Freight returns must be properly packaged and may require coordination with Stay Ready Outdoors support.
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Items must be returned in new, unused condition with original packaging and all components.
Stay Ready Outdoors reserves the right to determine whether an item qualifies as oversized or freight-required based on weight, dimensions, or carrier requirements.
Damaged, Defective, or Incorrect Items
Please inspect your order upon arrival. If your item is damaged, defective, or incorrect, contact us at info@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.
Products Fulfilled via Shopify Collective
Some items sold by Stay Ready Outdoors are fulfilled by third-party vendors through Shopify Collective. These items follow slightly different return procedures:
Return Window
Returns must be initiated within 30 days of the purchase date.
Who Handles the Return
Returns and exchanges for these products are handled directly by the originating business. However, you may contact Stay Ready Outdoors at info@stayreadyoutdoors.com for assistance facilitating a return or exchange.
Customer Responsibility for Shipping Costs
Shipping cost responsibility varies by vendor. Some vendors offer free returns or exchanges, while others may require customers to pay return shipping.
Size Exchanges
If a return is for a size exchange only, the replacement item will be shipped once the original is received and inspected, following the vendor’s policy.
Refunds
If a refund is approved after inspection, the originating business will notify Stay Ready Outdoors and the refund will be processed to the original payment method.
Price Changes
Prices for Shopify Collective products are subject to change without notice.
Vendor-Specific Note
The Buffalo Wool Company
Items fulfilled by The Buffalo Wool Company through Shopify Collective follow the same return procedures listed above. Customers are responsible for return shipping costs unless otherwise stated by the vendor.
All other eligibility requirements and non-returnable item restrictions in our standard policy still apply unless otherwise stated.
Exchanges
The fastest way to exchange an item is to initiate a return for the original item and, once accepted, place a new, separate order for the desired item.
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 approval. If approved, your refund will be issued to the original payment method within 10 business days, less applicable return shipping costs.
Please note:
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Your bank or credit card company may require additional time to post the refund.
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If you have not received your refund within 15 business days of approval, contact info@stayreadyoutdoors.com.
Need Help?
If you have any questions about your return or refund, we’re here to help:
Email: info@stayreadyoutdoors.com















