What is "Lastex" - Definition & Explanation
Last Updated on: 31-Mar-2023 (10 months, 27 days ago)
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Lastex is a unique elastic yarn that revolutionized the textile industry, providing garments with stretch, comfort, and resilience. This article delves into the intricacies of Lastex, exploring its history, types, tips for handling, and profiles of its top international users and manufacturers. Join us on a fascinating journey to uncover the secrets of Lastex.

History and Origin

The story of Lastex dates back to the early 20th century when the demand for flexible fabrics was on the rise. The development of Lastex was a result of tireless experimentation and innovation by textile engineers seeking to create stretchable materials for garments. The breakthrough came in the 1930s when a British engineer named Charles E. Lewis invented the Lastex process, paving the way for a new era in textile manufacturing.

The Lastex Process

The Lastex process involves the incorporation of elastic threads into fabric during the weaving or knitting stage. These elastic threads, often made of natural or synthetic rubber, are interlaced with regular yarns to create stretchable fabrics. The resulting fabric exhibits excellent stretch and recovery properties, making it ideal for applications that require flexibility and comfort.

Types of Lastex

Lastex is available in various forms, each tailored to meet specific fabric requirements:

  1. Single-Core Lastex: This type of Lastex consists of a single elastic core thread surrounded by regular yarns. It provides moderate stretch and is commonly used in lightweight fabrics and lingerie.
  2. Double-Core Lastex: Double-Core Lastex contains two elastic core threads, resulting in enhanced stretch and recovery properties. It is often used in swimwear, sportswear, and activewear.
  3. Clear Lastex: Clear Lastex features a transparent elastic thread, making it ideal for transparent or sheer fabrics where visibility of the elastic is a concern.
  4. Colored Lastex: Colored Lastex incorporates dyed elastic threads, offering an array of design possibilities. It is commonly used in fashion apparel, accessories, and novelty fabrics.

Tips for Handling Lastex Fabrics

Working with Lastex fabrics requires careful handling to preserve their elasticity and durability:

  • Washing Instructions: Follow the manufacturer's guidelines for washing and drying Lastex fabrics. Avoid using harsh detergents or high-temperature wash cycles, as they can damage the elasticity of the fabric.
  • Storage Considerations: Store Lastex garments or fabrics in a cool, dry place away from direct sunlight to prevent degradation of the elastic fibers.
  • Seam Considerations: When sewing Lastex fabrics, use a stretch needle and select appropriate stitching techniques, such as a stretch stitch or a zigzag stitch, to maintain the fabric's elasticity and prevent popped seams.
  • Trimming and Finishing: Carefully trim excess elastic threads after sewing to achieve a neat and professional finish. Avoid cutting the elastic threads too close to the fabric to prevent unraveling.

Top International Users and Manufacturers

Lastex has gained popularity among numerous international brands in the textile industry. Here are some notable users and manufacturers:

  1. Spanx: Spanx, a renowned American shapewear brand, utilizes Lastex in its range of slimming and body-contouring garments, providing a perfect blend of comfort and support.
  2. Wolford: Wolford, an Austrian luxury hosiery and lingerie brand, incorporates Lastex in their collections, ensuring a superior fit and long-lasting elasticity.
  3. Jockey: Jockey, a well-known underwear and loungewear brand, integrates Lastex into their products, delivering unmatched comfort and flexibility for everyday wear.
  4. Triumph: Triumph, a global lingerie and intimate apparel brand, utilizes Lastex in their innovative designs, offering optimal support and freedom of movement.


Lastex has emerged as a game-changer in the textile industry, revolutionizing the way we think about comfort and flexibility in garments. Its origins trace back to the 1930s, and since then, it has evolved into a versatile elastic yarn used in various types of fabrics. By following proper handling techniques, Lastex fabrics can maintain their elasticity and longevity. With top international brands embracing Lastex, consumers can enjoy a perfect blend of style, comfort, and durability in their clothing.

Lastex is an elastic fiber made from Latex. It is most often used with other fibers to create fabrics such as Spandex and foundation garments. Lastex will deteriorate after repeated washing and drying, losing its elasticity.
Yarn that has an elastic core wound around with cotton or silk or nylon or rayon threads.

Some other terms

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