What Materials Are Used in UGG Boot Soles?

Ugg boots and Ugg slippers

The Inside Scoop on UGG Boot Soles

As someone who's either already enjoying the comfort of these boots or considering a purchase, you might find yourself curious about what makes them so special. You want to know if the materials used are durable, comfortable, and worth your investment.

Understanding the components of these boots is crucial. You need to be confident that you're making a smart choice, especially when it comes to something as important as your footwear. With years of experience in the fashion industry and a deep understanding of footwear materials, I’m here to give you the inside scoop.

In this article, you’ll learn about the different materials used in the soles of UGG boots, how they compare to other types of boots, and what makes them stand out in terms of comfort and durability. Whether you’re a long-time fan or a first-time buyer, by the end of this read, you’ll have all the information you need to make an informed decision.

Overview of UGG Boot Soles

When it comes to UGG boots, the soles play a crucial role in providing the comfort and durability that the brand is known for. UGG boots, popular in Australia and worldwide, have distinct features that set them apart from other types of footwear. Understanding these features can help you appreciate why UGG boots are a worthy investment.

The soles of UGG boots are designed to offer a balance between softness and support. They need to be flexible enough to provide comfort with each step while being sturdy enough to withstand daily wear and tear. The materials used in the soles are carefully selected to meet these requirements, ensuring that every pair of UGG boots delivers the high quality that customers expect.

Key materials commonly used in UGG boot soles include EVA (Ethylene Vinyl Acetate), which is known for its lightweight and cushioning properties, and various proprietary blends designed to enhance durability and grip. Additionally, some UGG boots incorporate wool and synthetic blends to provide additional comfort and insulation, making them ideal for various weather conditions.

Detailed Breakdown of Materials

Understanding the specific materials used in UGG boot soles can give you insight into why these boots are renowned for their comfort and durability. Here’s a closer look at the primary materials used:

EVA (Ethylene Vinyl Acetate)

EVA is a common material in UGG boot soles due to its excellent cushioning properties. This lightweight and flexible material provides a soft, comfortable feel underfoot, making it ideal for all-day wear. EVA also offers good shock absorption, which helps reduce the impact on your feet and joints, providing additional comfort during extended use. 

Wool and Synthetic Blends

UGG boots are well-known for their cosy interior linings, often made from UGG pure wool or a combination of wool and synthetic fibres. While these materials are primarily used in the lining, they can also be integrated into the sole construction to enhance comfort and insulation. Wool is naturally moisture-wicking and temperature-regulating, ensuring that your feet stay warm in cold weather and cool in warmer conditions. The use of synthetic blends helps improve the durability and flexibility of the soles, making them suitable for various activities and environments.

Comparison with Other Types of Boots

To fully appreciate the quality and benefits of UGG boot soles, it’s helpful to compare them with those of other popular boot types. This comparison will highlight what sets UGG boots apart in terms of materials, comfort, and durability.


Many traditional boots use rubber or polyurethane (PU) for their soles. While these materials are known for their durability and excellent grip, they can be heavier and less flexible than the EVA (Ethylene Vinyl Acetate) used in UGG boots. Rubber and PU soles are often found in work boots or hiking boots, where rugged durability and slip resistance are paramount. In contrast, the lightweight and cushioning properties of EVA make UGG boots more comfortable for everyday wear and casual activities.


The comfort of UGG boot soles is a significant differentiator. The use of EVA provides superior cushioning and shock absorption compared to the harder rubber soles of many other boots. This makes UGG boots ideal for prolonged wear, as they reduce foot fatigue and provide a plush underfoot feel. Additionally, the 100% sheepskin lining in UGG boots adds a layer of softness and insulation that is often missing in other boot types. This makes UGG boots particularly appealing for those seeking both comfort and warmth.


While rubber soles are incredibly durable and resistant to harsh conditions, the EVA material used in UGG boots offers a good balance of durability and lightness. EVA is designed to maintain its shape and function over time, even with regular use. This makes UGG boots a versatile option for various terrains and activities, from urban strolls to light outdoor adventures.

UGG boots paired with matching skirt

Environmental Impact

As consumers become more environmentally conscious, understanding the ecological impact of the materials used in UGG boots becomes increasingly important. Here’s a closer look at how the primary materials in UGG boot soles—EVA and 100% sheepskin—affect the environment.

EVA (Ethylene Vinyl Acetate)

EVA is a type of plastic known for its flexibility, light weight, and cushioning properties. While EVA is widely used in footwear for these benefits, its environmental impact is a mixed bag. On the one hand, EVA production is less resource-intensive compared to other plastics, requiring lower temperatures and shorter processing times. This can result in a smaller carbon footprint during manufacturing.

100% Sheepskin

Sheepskin, used in the lining and sometimes in the sole construction of UGG boots, is a natural and renewable resource. The use of 100% sheepskin provides excellent insulation and comfort, reducing the need for synthetic materials. 

Sustainable farming practices, including responsible land management and animal welfare, are crucial to minimizing the ecological footprint. UGG Australia has taken steps to ensure its materials are sourced from suppliers that follow sustainable and ethical practices.

Mitigating Environmental Impact

To further reduce the environmental impact, UGG and other manufacturers of UGGs Australia can adopt various sustainable practices, such as:

Using recycled or bio-based EVA: Incorporating recycled EVA or exploring bio-based alternatives can help reduce reliance on new plastic production.

Ethical sourcing: Ensuring that sheepskin is sourced from farms that follow sustainable and humane practices.

Eco-friendly tanning: Using tanning methods that minimize the use of harmful chemicals and reduce water consumption.

Recycling programs: Implementing programs to recycle old boots or repurpose materials to extend their lifecycle.

As consumers, choosing products from brands committed to sustainability can make a significant difference.

Durability and Comfort

When investing in a pair of UGG boots, durability and comfort are two of the most important factors to consider. The materials used in UGG boot soles, primarily EVA and 100% sheepskin, play a significant role in ensuring that these boots meet the high standards expected by consumers.


EVA Soles:

EVA (Ethylene Vinyl Acetate) is a highly durable material known for its resilience and ability to withstand wear and tear. The flexibility of EVA allows the soles to absorb shock effectively, reducing the impact on your feet with each step. This not only prolongs the life of the boots but also maintains their shape and performance over time. Despite being lightweight, EVA is tough enough to endure daily use, making it a reliable choice for those looking for long-lasting footwear.

100% Sheepskin:

The use of 100% sheepskin in UGG boots adds an extra layer of durability. Sheepskin is naturally strong and can endure extensive use while retaining its softness and insulating properties. The natural fibres in sheepskin also have moisture-wicking abilities, helping to keep your feet dry and comfortable, which in turn extends the lifespan of the boots.


EVA Soles:

EVA soles are renowned for their comfort. The material’s cushioning properties provide a plush feel underfoot, making UGG boots exceptionally comfortable for prolonged wear. The shock-absorbing nature of EVA helps to reduce foot fatigue, which is particularly beneficial if you spend long periods on your feet. This makes UGG boots an excellent choice for daily activities, casual outings, and even light outdoor adventures.

100% Sheepskin:

One of the standout features of UGG boots is their sheepskin lining. Sheepskin is incredibly soft and offers a luxurious feel that enhances overall comfort. It provides natural insulation, keeping your feet warm in cold weather and cool in warmer conditions. The breathability of sheepskin ensures that your feet stay comfortable in various climates, making UGG boots versatile and suitable for year-round wear.

Combined Benefits

The combination of EVA soles and 100% sheepskin lining results in a boot that offers both exceptional durability and unmatched comfort. This blend of materials ensures that UGG boots provide the support you need while keeping your feet cosy and comfortable throughout the day.

Why UGG Boots Are a Smart Investment for Comfort and Durability

Understanding the materials used in UGG boot soles gives you a deeper appreciation for why these boots have gained such widespread popularity. The use of EVA and 100% sheepskin not only provides exceptional comfort and durability but also highlights the brand’s commitment to quality.

EVA Soles:

Known for their lightweight and flexible nature, EVA soles offer excellent cushioning and shock absorption, making UGG boots ideal for everyday wear. The durability of EVA ensures that your boots will maintain their performance and shape over time, giving you reliable footwear that lasts.

100% Sheepskin:

The luxurious sheepskin lining adds unmatched comfort and natural insulation. This material keeps your feet warm in cold weather and cool in warmer conditions, providing a versatile solution for year-round wear. The breathability and moisture-wicking properties of sheepskin further enhance the comfort and hygiene of your boots.

Whether you're walking through the city, enjoying a casual day out, or braving cooler weather, UGG boots offer the support and comfort you need.

Why UGG Boots Are Worth Every Penny

Investing in UGG boots is more than just purchasing a pair of shoes; it's about acquiring a staple of comfort and durability. The detailed exploration of the materials used in UGG boot soles highlights why these boots stand out from the crowd. With their smart construction using EVA and 100% sheepskin, UGG boots provide not only superior comfort and cushioning but also ensure durability that withstands the test of time and elements.

Moreover, the environmentally conscious methods in the production and potential recycling of materials like EVA, coupled with the sustainable sourcing of sheepskin, reflect a commitment to ethical practices. This consideration further enhances the value of UGG boots, making them a responsible choice in a world where environmental impact is increasingly scrutinised.

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