ULTRA X Custom Packs

Why look like everyone else on the trail, when you can look like you? Mountain Laurel Designs’ now offers customizable packs; you get the same ultralight, trail-proven performance you know and love, but in your choice of six Ultra X colors and three fabric weights, with the features you need to go further, faster. From the 38L Burn to the 55L Exodus, mix and match fabric panels and add-ons to create a pack that’s  yours. Get Building...

Step 1: Select Your Pack

Select from the 38L Burn, 48L Prophet, or 55L Exodus. We recommend reading through the full product descriptions of each pack to ensure it has the features that are right for you and your adventure style.

• 38L BURN: The FKT/Thru-Hike Record Setter.
• 48L PROPHET: The “Modern Meets Classic” SUL Frameless Pack.
• 55L EXODUS: The Lightest Strongest Full-Size + Full-Featured Frameless Pack Made.

Step 2: Select Your Toso Size

Please read our “Pack Size” and “Sizing Guide” tabs CAREFULLY before ordering your custom pack. We cannot exchange for a different size or accept custom pack returns. Our pack sizes are not the same as you would get if you were “fitted” at an outdoor store, so remeasure according to our guide!

• Torso Sizes: XS 16.5”, S 18”, M 20”, LG 21.5”, XLG 23”

Step 3: Custom Colors, Weights & Fabrics

Make it bright, make it stealth, or anything in between.
ULTRA X

Ultra X is a premium pack fabric with extremely high abrasion and tear strength. Made by US-based Challenge Fabrics, this fabric has a woven face of UHMWPE (aka Spectra, Dyneema) and Polyester with a waterproof laminate bonded inside, plus an X Grid UHMWPE reinforcement. All Ultra X Packs are seam-taped for excellent waterproofness and seam strength.

ULTRA X Fabric Weights:

• 100X is about 3.7 oz/sq yd, and will weigh about the same as the stock Ultra X packs.
• 200X is about 4.2 oz/sq yd, and the pack weight will weigh about +10% above the stock UltraX 100 pack weight.
• 400X is about 5.5 oz/sq yd, and the pack weight will weigh about +15% above the stock Ultra X 100 pack weight.

Ultra X Colors: Black, Avocado, Chili Red, Blue Smoke, Coyote Tan, Berry Purple

ULTRAGRID

UltraGrid, a 210d waterproof coated recycled Hi-Tenacity Type 66 Nylon featuring double ripstop UHMWPE grids from US-based Challenge Fabrics. This is the good stuff! About 4.5oz Sq/yd. A longtime workhorse of ultralight packs. Looks Great-Lasts a Long Time. UltraGrid is available as an option for the rear pocket, shoulder straps, hipbelt wings, and side pockets.

UltraGrid Colors: Black, Avocado, Chili Red

UltraStretch Mesh options are available for the rear pocket, optional Shoulder Strap Pockets, and the optional Bottom Pocket (Dark Gray Only). UltraStretch is an advanced 4-way stretch mesh, supercharged with ULTRA™ to be lightweight, ultra durable, and tear-resistant.

UltraStretch Colors: Black, Dark Gray, Lime, Coyote Brown, and Tangerine

Customizable Panels Include:

• Side Panels & Front Panel: This color will be on both side panels (including the sides of the extension collar) and on the front of the pack and the front extension collar.
• Back Panel & Bottom Panel: This color will appear on the back panel, including the back of the extension collar, and on the bottom of the pack.
• Side Pockets: This is the color of the side pockets. In addition to Ultra X, you can also opt to use UltraGrid here.
• Rear Pocket: This is the large pocket on the front of the pack (we put it there to confuse you). In addition to Ultra X, you can also opt to use UltraGrid or UltraStretch Mesh here.
• Shoulder Straps & Hipbelt Wings: This color will appear on the outer-facing portion of the shoulder straps and the hipbelt. UltraGrid options only.

Step 4: Choose Your Add-Ons

Dial in your system with the following options:

• Sewn-On Shoulder Strap Pockets [+$13 -$25]: These are Dark Gray UltraStretch pockets sewn into the shoulder straps. Pockets are open-topped and close tightly with a stuff sack-style bungee top. They fit most 12 oz to 32 oz (.35L to 1L) water bottles and most  bear sprays. Options include: Left Pocket, Right Pocket, or Both.
• Hydration Port [+$10 -$20]: A small, triangular overlap slot above the shoulder strap on the back of the pack that allows a  water reservoir tube to pass through. Options include: Left Side Port, Right Side Port, or Both.
• Bottom Pocket [$25]: A Dark Gray UltraStresh Mesh pass-through pocket that spans the bottom of the pack, provides easy access to rain gear, snacks, or a handy place to store your trash.

Step 5: Add to Cart

Add your pack to your cart, check out, and we’ll build it!