How to Lace ULL GTX BOA Hunting Boots for a Custom Fit

By Zamberlan Italian Hiking Boots, Hunting Boots, and ... | Published: 2026-10-23

Category: How-to Guides

Learn how to adjust the BOA lacing system on your ULL GTX BOA hunting boots for a secure, comfortable fit. Step-by-step instructions for micro-adjustments and heel lock.

Quick Answer

To lace your ULL GTX BOA hunting boots for a custom fit, use the dual-dial system to micro-adjust tension in two zones: first set the lower dial for a snug midfoot, then the upper dial for ankle support and heel lock.

Why the BOA System Gives You More Control

Unlike traditional laces, the BOA system uses a dial and cable mechanism that allows you to tighten or loosen in small increments. The ULL GTX BOA has two separate dials, so you can independently adjust the fit across your instep and your ankle. This is especially useful for hunting boots, where you need a secure heel lock to prevent blisters on uneven terrain, but also need room to flex your toes when crouching or climbing.

A common mistake is cranking both dials to maximum tightness. That can restrict circulation and cause discomfort over a long day. Instead, think of the lower dial as your midfoot volume control and the upper dial as your ankle stability control.

Step-by-Step Lacing Guide for ULL GTX BOA

1. Loosen Both Dials Before Putting On the Boot: Pull both BOA dials outward to release the cable tension. This gives you enough slack to slide your foot in easily without forcing it. Never force your foot into a fully tightened boot – it can damage the cable mechanism and cause uneven wear.
2. Set the Lower Dial First for Midfoot Support: Once your foot is inside, press the lower dial and turn it clockwise until you feel the cable snugly wrap your midfoot. You should not feel pinching on top of your foot. If you do, back off a quarter turn. A common mistake is overtightening the lower dial, which can cut off circulation. Aim for a firm but comfortable hold.
3. Adjust the Upper Dial for Heel Lock and Ankle Stability: With the lower zone set, press the upper dial and turn clockwise. You want the cable to pull your heel back into the heel pocket. Stop when you feel the boot cradle your ankle without restricting forward flex. If you feel heel lift when walking, tighten the upper dial one more click. If your toes go numb, loosen the upper dial slightly – the heel lock should be snug, not vice-like.
4. Fine-Tune Both Dials After a Short Walk: Take a few steps and bend your knees to simulate walking on uneven ground. If the boot feels loose in one area, release the corresponding dial (pull outward) and re-tighten to a new setting. Repeat until both zones feel balanced. Skipping this test walk is the #1 reason hunters end up with discomfort on the trail. Always check fit before heading out.
5. Release Dials Properly When Taking Off the Boots: To remove the boots, pull both dials outward to fully release the cable. Never twist or yank the dials – they are designed to pop out with a straight pull. Store the boots with the cables relaxed to prevent memory set. Forcing the dials while under tension can strip the internal ratchet. A gentle pull is all it takes.

Product Facts

ULL GTX BOA - Black/Grey: The Ull GTX RR BOA features a patented double BOA closure system that allows for customizable fit. This means you can fine-tune the tension in two separate zones, giving you a precise fit without pressure points.
ULL GTX BOA - Black/Grey