ULL GTX BOA - Black/Grey
7
$775.00
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INSULATED
Insulation & BOA laces for extreme weather hunting
ULL GTX BOA - Black/Grey
$775.00
The Ull GTX RR BOA is an insulated, extreme cold weather hunting boot made for top-notch performance in the most treacherous of conditions. Gore-Tex Insulated Comfort membranes combined with Primaloft insulation provide two layers of extreme warmth and comfort, while the Vibram Star Trek II...
SKU: 3032ZBGM
Free Shipping from CAD $199
All orders above CAD $199 will be shipped for free. We will work quickly to ship your order as soon as possible. Once your order has shipped, you will receive an email with further information. Delivery times vary depending on your location.
60-Day Returns & Exchanges
Our goal is for every customer to be totally satisfied with their purchase. If this isn't the case, we offer easy returns and exchanges of unused product within a 60-day window.
Need Help?
Not sure which product is right for you? We’re here to help with sizing, fit, terrain, intended use, and care recommendations. Whether you’re heading into the mountains, on the trail, or into demanding work conditions, our team can help you choose with confidence.
ULL GTX BOA - Black/Grey
The Details
Best For
Late Season Hunting
Weight
965g
Based on size US 8 (Half Pair)
Boot Height
11"
Terrain
Rugged backcountry
Fit
Last Type & Size guide
Fit Guide
With nearly 100 years of bootmaking expertise, we’ve perfected our craft of turning the details of fit into it a true investment in comfort for your feet. We engineer our footwear lasts, fit adaptations, and construction methods to consider all the anatomical features of the foot, as well as the requirements for various end-use applications. In general, you’ll find all Zamberlan boots to be comfortable – not too long, with a good volume – but the specific fit adaptations below will help guide you to the right boot for your needs.
Wide Fit
Size Guide
The foot plays an important role in supporting the weight of the entire body as well as locomotion. The engineering of our lasts and footwear construction take into account all the anatomical aspects of the foot, making it a true investment in your feet. Zamberlan® engineered different lasts based on the anatomical features of the foot and the requirements for various end-use applications.
Generally, Zamberlan boots are all comfortable, not too long and have a good volume.
Boot Lasts & Size Charts
To find your Zamberlan size, measure the distance from the back of your heel to the tip of your longest toe while wearing socks.
- Place a sheet of paper on the floor and trace your foot with your heel against a wall.
- Measure the outline from the back of your heel to the front of your toes.
- Find this measurement in the chart below for the last of your model. If between two sizes, choose the larger.
- Repeat for both feet and use the size that fits your bigger foot.
Regular Last
ZBPK Performing Fit · Slightly lower instep · Wrapped foot flex point · Tighter heel lock area
| Size | 9" 1/32 | 9" 9/32 | 9" 9/16 | 9" 21/32 | 9" 27/32 | 9" 31/32 | 10" 3/32 | 10" 11/32 | 10" 15/32 | 10" 5/8 | 10" 7/8 | 10" 31/32 | 11" 1/8 | 11" 1/4 | 11" 3/8 | 11" 22/32 | 11" 15/16 | 12" 3/16 | 12" 15/32 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Foot (in) | 9" 1/32 | 9" 9/32 | 9" 9/16 | 9" 21/32 | 9" 27/32 | 9" 31/32 | 10" 3/32 | 10" 11/32 | 10" 15/32 | 10" 5/8 | 10" 7/8 | 10" 31/32 | 11" 1/8 | 11" 1/4 | 11" 3/8 | 11" 22/32 | 11" 15/16 | 12" 3/16 | 12" 15/32 |
| Foot (cm) | 23 | 23.6 | 24.3 | 24.6 | 25 | 25.3 | 25.6 | 26.3 | 26.6 | 27 | 27.6 | 27.9 | 28.3 | 28.6 | 28.9 | 29.6 | 30.3 | 31 | 31.7 |
| US Men | — | — | — | — | — | — | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 13 | 14 | 15 |
| US Women | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 11 | — | — | — | — | — | — | — | — | — |
| EU | 37 | 38 | 39 | 39.5 | 40 | 40.5 | 41 | 42 | 42.5 | 43 | 44 | 44.5 | 45 | 45.5 | 46 | 47 | 48 | 49 | 50 |
Technical Last
ZTEC Technical Fit · Reduced volume in instep · Downturned shape · Pronounced heel to ankle line
| Size | 9" 7/32 | 9" 1/2 | 9" 23/32 | 9" 7/8 | 10" | 10" 1/8 | 10" 9/32 | 10" 1/2 | 10" 21/32 | 10" 25/32 | 11" 1/16 | 11" 3/16 | 11" 5/16 | 11" 15/32 | 11" 9/16 | 11" 27/32 | 12" 3/32 | 12" 3/8 | 12" 5/8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Foot (in) | 9" 7/32 | 9" 1/2 | 9" 23/32 | 9" 7/8 | 10" | 10" 1/8 | 10" 9/32 | 10" 1/2 | 10" 21/32 | 10" 25/32 | 11" 1/16 | 11" 3/16 | 11" 5/16 | 11" 15/32 | 11" 9/16 | 11" 27/32 | 12" 3/32 | 12" 3/8 | 12" 5/8 |
| Foot (cm) | 23.4 | 24.1 | 24.7 | 25.1 | 25.4 | 25.7 | 26.1 | 26.7 | 27.1 | 27.4 | 28.1 | 28.4 | 28.7 | 29.1 | 29.4 | 30.1 | 30.7 | 31.4 | 32.1 |
| US Men | — | — | — | — | — | — | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 13 | 14 | 15 |
| US Women | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 11 | — | — | — | — | — | — | — | — | — |
| EU | 37 | 38 | 39 | 39.5 | 40 | 40.5 | 41 | 42 | 42.5 | 43 | 44 | 44.5 | 45 | 45.5 | 46 | 47 | 48 | 49 | 50 |
Wide Last
ZWL Wide Fit · High instep · Wide foot flex point · Round toe · Wide Achilles tendon area
| Size | 9" 11/32 | 9" 5/8 | 9" 7/8 | 10" | 10" 1/8 | 10" 9/32 | 10" 3/8 | 10" 21/32 | 10" 25/32 | 10" 29/32 | 11" 3/16 | 11" 5/16 | 11" 15/32 | 11" 9/16 | 11" 11/16 | 11" 31/32 | 12" 3/16 | 12" 15/32 | 12" 3/4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Foot (in) | 9" 11/32 | 9" 5/8 | 9" 7/8 | 10" | 10" 1/8 | 10" 9/32 | 10" 3/8 | 10" 21/32 | 10" 25/32 | 10" 29/32 | 11" 3/16 | 11" 5/16 | 11" 15/32 | 11" 9/16 | 11" 11/16 | 11" 31/32 | 12" 3/16 | 12" 15/32 | 12" 3/4 |
| Foot (cm) | 23.7 | 24.4 | 25.1 | 25.4 | 25.7 | 26.1 | 26.4 | 27.1 | 27.4 | 27.7 | 28.4 | 28.7 | 29.1 | 29.4 | 29.7 | 30.4 | 31 | 31.7 | 32.4 |
| US Men | — | — | — | — | — | — | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 13 | 14 | 15 |
| US Women | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 11 | — | — | — | — | — | — | — | — | — |
| EU | 37 | 38 | 39 | 39.5 | 40 | 40.5 | 41 | 42 | 42.5 | 43 | 44 | 44.5 | 45 | 45.5 | 46 | 47 | 48 | 49 | 50 |
Laces Size Chart
Generally, lace sizes correlate to the specific boot. The best way to ensure the correct replacement lace is to measure your existing lace.
125cm — Low cut shoes
150cm — 5" and 6" hikers
175cm — 8" semi-tall boots and larger 6" hikers
190cm — 11" tall boots and larger 8" semi-tall boots
205cm — 11" tall boots, larger sizes
ULL GTX BOA - Black/Grey
The Zamberlan Difference
- Waterproof
- Insulated
- Resolable
- Made in Italy
- Crampton Compatibility: C1 / Strap-On
Technologies
Technical Specs & Product Comparison
All the construction detail, plus similar product for comparison
The Basics
Price
$775.00
Gender
Men's
Best for
Late Season Hunting
Weight Half Pair (M9/W7)
965g
Boot Height
11"
Flex rating
Cushioning
Fit
Wide Fit
Last
Wide Last
Insulated
Yes
Full Tech Specs
Upper Material
SuperFabric® + PrimaLoft®
Upper Thickness
—
Foot Protection
Full rubber rand
Lining
GORE-TEX Insulated Comfort
Lacing
BOA Lacing System
Midsole
Dual density PU wedge + TPU frame + TPU Stabilizer
Insole
4mm Flex +PE+ Aluminium Layer
Outsole
Exclusive Vibram® Star Trek II
Terrain
Rugged backcountry
Crampon compatibility
C1 / Strap-On
Cut protection
—
Anti-static
—
Anti-Perforation
—
Anti-Crush
—
Country of Origin
Italy
Current
The Basics
Price
$625.00
Gender
Men's
Best for
Late Season Hunting
Weight Half Pair (M9/W7)
945g
Boot Height
11"
Flex rating
Cushioning
Fit
Wide Fit
Last
Wide Last
Insulated
Yes
Full Tech Specs
Upper Material
Hydrobloc® Nubuck Leather
Upper Thickness
2.6mm - 2.8mm
Foot Protection
Full rubber rand
Lining
GORE-TEX Insulated Comfort
Lacing
Traditional lacing
Midsole
EVA Wedge
Insole
4mm Flex + PE
Outsole
Exclusive Vibram® Star Trek II
Terrain
Rugged backcountry
Crampon compatibility
—
Cut protection
—
Anti-static
—
Anti-Perforation
—
Anti-Crush
—
Country of Origin
Italy
The Basics
Price
$600.00
Gender
Men's
Best for
All Season Hunting
Weight Half Pair (M9/W7)
900g
Boot Height
11"
Flex rating
Cushioning
Fit
Backpacking & Wide Fit
Last
Regular & Wide Last
Insulated
No
Full Tech Specs
Upper Material
Hydrobloc® Nubuck Leather
Upper Thickness
2.4mm - 2.6mm
Foot Protection
Full rubber rand
Lining
GORE-TEX Performance Comfort
Lacing
Traditional lacing
Midsole
Dual Density PU Wedge + TPU Frame + TPU Stabilizer
Insole
4mm Flex + PE
Outsole
Exclusive Vibram® Star Trek II
Terrain
Rugged backcountry
Crampon compatibility
—
Cut protection
—
Anti-static
—
Anti-Perforation
—
Anti-Crush
—
Country of Origin
Italy
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