---
product_id: 98235430
title: "Jianai Men's Heavy-Weight Four-Layer Thermal Underwear Bottoms Pants"
brand: "jianai"
price: "¥20259"
currency: JPY
in_stock: true
reviews_count: 8
url: https://www.desertcart.jp/products/98235430-jianai-mens-heavy-weight-four-layer-thermal-underwear-bottoms-pants
store_origin: JP
region: Japan
---

# Jianai Men's Heavy-Weight Four-Layer Thermal Underwear Bottoms Pants

**Brand:** jianai
**Price:** ¥20259
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Jianai Men's Heavy-Weight Four-Layer Thermal Underwear Bottoms Pants by jianai
- **How much does it cost?** ¥20259 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/98235430-jianai-mens-heavy-weight-four-layer-thermal-underwear-bottoms-pants)

## Best For

- jianai enthusiasts

## Why This Product

- Trusted jianai brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Full description not available

## Images

![Jianai Men's Heavy-Weight Four-Layer Thermal Underwear Bottoms Pants - Image 1](https://m.media-amazon.com/images/I/617RfjVM4OL.jpg)
![Jianai Men's Heavy-Weight Four-Layer Thermal Underwear Bottoms Pants - Image 2](https://m.media-amazon.com/images/I/61Ly0gzp4qL.jpg)
![Jianai Men's Heavy-Weight Four-Layer Thermal Underwear Bottoms Pants - Image 3](https://m.media-amazon.com/images/I/81qb3PuJ68L.jpg)
![Jianai Men's Heavy-Weight Four-Layer Thermal Underwear Bottoms Pants - Image 4](https://m.media-amazon.com/images/I/81iuapM6J-L.jpg)
![Jianai Men's Heavy-Weight Four-Layer Thermal Underwear Bottoms Pants - Image 5](https://m.media-amazon.com/images/I/61B8WwgJaPL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Deer Hunting
  

*by C***E on Reviewed in the United States on February 25, 2021*

These are perfect for sitting in a deer blind on a cold morning to stay warm. They are too heavy for extreme activity and would most likely be way to hot. during deer bow season in southern Ohio it can get into single digits and unless you're layered up right it can get uncomfortable.To summarize: perfect for motionless hunting from blind too heavy /hot for activity. In fact on 15degree F mornings I would be sweating after walking to my blinds about 1/2 to 3/4 mile.I imagine if you are in colder areas they would be ok to work or be active outside. Wish I could find a matching top.

### ⭐⭐⭐⭐⭐ 







  
  
    Fantastic
  

*by P***H on Reviewed in the United States on January 17, 2022*

These are fantastic. The only down side is they don’t make the shirt . Just the bottoms

### ⭐⭐⭐⭐ 







  
  
    They are super warm and the internal material is super soft
  

*by R***E on Reviewed in the United States on January 19, 2018*

I wore these as an undergarment for my SCUBA Drysuit, way too warm for that and not exactly the thinnest option. However, I can't wait to use these snowboarding and ice climbing. They are super warm and the internal material is super soft.These are quilted and the patches on the knees add reinforcement to the area that will likely get the most abuse. The quality thus far is great, from the stitching to hold the quilted layers together. Time will tell how it holds up and I'll modify the review accordingly as I put these into use more.

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**Shop now:** [https://www.desertcart.jp/products/98235430-jianai-mens-heavy-weight-four-layer-thermal-underwear-bottoms-pants](https://www.desertcart.jp/products/98235430-jianai-mens-heavy-weight-four-layer-thermal-underwear-bottoms-pants)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-10-21*