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ULTRA Merino 145 Zip-Off Bottom

Our best-selling mid-weight merino wool base layer. Naturally odor resistant.
Front of ULTRA Merino 145 Zip-Off Bottom in Gunmetal Grey

ULTRA Merino 145 Zip-Off Bottom

Features

Best Use: All Conditions

The ULTRA Merino 145 Zip-Off Bottom is a versatile, lightweight base layer with full-length leg zippers that allow for easy on and off without removing your boots.

  • Weight

    6.9 oz / 196 g (L)

  • Protection

    Naturally Odor Resistant, UPF 50+ Rating

  • Material

    Nuyarn Merino- Body: 90% Merino Wool / 10% Nylon

  • Conditions

    Cold

  • 28 in / 71 cm inseam
  • Full-length side zippers for easy off and on
  • Optimized hem height aligns at top of boot (keeps zippers out of boots)
  • Crotch gusset for added comfort and reduced chaffing
  • Functional fly
  • Spandex-free stretch
  • Thermo-regulating
  • Moisture wicking and quick drying
  • Highly breathable
  • Highly resilient
  • Flat lock seams
  • Anatomical shaping for fit and comfort

NEED MORE TIPS?

Demonstration of leg zipper function for zip-off base layer bottom
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Zip-Off Bottoms - Base Layers

Back of Hunter Wearing Ultra Merino 120 LT LS Hoodie in Valo Camouflage Highlighting NuYarn Merino Wool

Do Your Research: Nuyarn® Merino

Learn how patented Nuyarn® Technology captures and maximizes the natural performance of merino wool in our hunting apparel and clothes.

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Overall rating: 4.7494035 / 5 from 838 reviews.

AI Generated Review Summary

ULTRA Merino 145 Zip-Off Bottoms by KUIU, developed in New Zealand, offer exceptional stretch, moisture management, and warmth. Customers praise the zip-off feature, perfect fit, high-quality material, and lightweight design, making them ideal for various outdoor activities and hunting.

Summary topics

  • Zip-Off Feature (5%): It was highlighted by customers that the zip off feature is a game changer and highly recommended.
  • Product Fit (15%): A significant number of customers appreciated the fit of the product, describing it as perfect or great.
  • Product Quality (7%): It was highlighted by customers that the quality of the product is consistently good or great. (Common opinion)
  • Layering Performance (20%): A significant number of customers remarked that the layer is great, perfect, awesome, and amazing.
  • Product Weight (5%): Customers loved the weight of the product, describing it as light, comfortable, and perfect for various outdoor activities.

Review topics: ["feel","layer","fit","problem","quality","weight","design","price","size","material","legs","zippers","weather","warmth","medium","pants","fabric","waist","comfort","johns","top","performance","velcro","bottoms","base","heat","spring","hunting","husband","stretch"].

Review highlights

  • "Nice light weight base layer...warm and good fit." — Gerry S.
  • "I have worn these in 20 degree temps and they are a great light weight base layer." — Bud N.
  • "Comfortable light weight and dry quickly awesome base layer" — Brian R.

Reviews

Great Products

"I just returned from Colorado Elk Hunt. Before going I decided to go "all in" with Kuiu! I bought the ultra Merino 145 zip off bottom and the lightweight hoody top for base layer. Absolutely love them. I also purchased the attack pant a pullover midlayer and rain pants and jacket. This gear is amazing. Truly the happiest I have ever been with a clothing purchase. Rained most days and I stayed dry and comfortable. I couldn't give a stronger recommendation. Everything was true to size per the sizing chart other than maybe the zip-off bottoms. I originally ordered a medium and returned them for small."

— Dustin M. (5/5)

Great base layer

"Great fit and construction as usual. Heavier than I expected, so they could almost interchange between some of my heavier base layers. Boot length will be helpful too."

— James H. (5/5)

Super comfortable. Not the most

"Super comfortable. Not the most durable. Mine got a fabric pull/run just removing them from the original packaging. But the overall comfort and convenience outweighs the fragility and doesn’t change the 5 ⭐️ status."

— Fran A. (5/5)

Have had a few pair

"Have had a few pair of these. Great set of base wear. Only reason for 3 stars is this new pair is too large in the thighs. All my other pairs have fit closer to skin than these new ones."

— Jeremiah E. (3/5)

A good base layer

"A good base layer, comfortable to put on and, above all, to take off when necessary."

— Michele C. (4/5)

Lightweight flexible layer

"Kuiu wool is the most comfortable I own. Designer obviously understands the challenge of temperature control in the field. Well designed!"

— David J. (5/5)

Almost there…

"I really like the zip off feature of this item. I can remove them without removing my outer pants and boots. Wish they were a little heavier in thickness. Almost t-shirt weight and have to be washed in wool detergent and dried flat like a sweater."

— Michael R. (4/5)

Good product, not perfect for backpacking

"I bought these for backpacking, and probably should have thought about it more prior. They fit very well, their Merino so great for regulating and insulating. I like the ability to remove them without taking off my pants and boots, but the zipper is bulkier than I imagined. Especially the velcro over the zipper at the top the waist, I found to be a bit uncomfortable underneath the waistband of my backpack. Not horrible, but it means I'm probably going to be less likely to use them while backpacking. For other outdoor activities they probably would be perfect."

— James M. (4/5)

Good but ran short

"They were comfy and kept me warm in the cold temps (30-40°F) and didn't sweat too much when it warmed up (70s) throughout the day. Length of inseam was too short. They were highwaters on me."

— Miguel S. (3/5)

First time I’ve had zip

"First time I’ve had zip off bottoms. Worked great with thin pants in the morning and could easily remove when it started warming up."

— Robert S. (5/5)

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