Leather, textiles, linings, soles and components for footwear and leather goods development.
Leather, textiles, linings, reinforcements, sole materials and components all influence the appearance, structure, comfort, durability and manufacturability of footwear and leather goods.
This guide introduces the principal material categories and the factors that should be considered when selecting them for product development, sampling and production.
Choosing a suitable material requires a balance between creative intention and technical feasibility.
Our material guidance service supports clients in evaluating leather, textiles, linings, sole materials and components in relation to their design and production requirements.
We can help assess:
Material recommendations remain subject to supplier availability, physical testing and final client approval.
At SDM, materials are considered as part of the complete development process rather than as isolated aesthetic choices. The most visually appealing option is not always the most suitable one.
Each leather must be assessed according to its thickness, softness or firmness, surface treatment, consistency, usable cutting area and expected performance.
A soft, flexible leather may work well for a relaxed shoe or an unstructured bag but may not provide enough support for formal footwear or structured leather goods. A heavy leather may be suitable for a rugged boot but too rigid for a lightweight trainer or an unlined upper. The same principle applies to every material within the product: each must perform its intended function and remain compatible with the materials and processes around it.
Material selection may depend on:
These factors should be assessed when materials are selected for prototyping and revisited before they are approved for production. Decisions made at this stage can influence the product’s appearance, consistency, durability, cost and manufacturability.
Leather terminology describes how the grain and surface of a hide have been processed or finished. These terms do not, on their own, guarantee quality, durability or suitability for a particular product. Suitability must always be assessed in relation to the intended construction, use and performance requirements.
Full-grain leather retains the original grain surface of the hide rather than being buffed to remove its natural markings. Its visible character may include pores, grain variation, wrinkles and healed surface marks.
Depending on its tannage and finish, full-grain leather may be soft and supple or firm and structured, with surfaces ranging from natural and matt to more protected finishes. It is commonly used for footwear, bags, belts and other leather goods where natural character and ageing are part of the intended result.
The term “full-grain” describes the condition of the surface; it does not, by itself, determine the grade or suitability of a particular leather.

Corrected-grain leather has been buffed or lightly abraded to reduce visible surface irregularities. Pigments, coatings or an embossed grain may then be applied to create a more uniform colour and appearance.
This can be useful for products or commercial ranges requiring greater visual consistency. However, the degree of correction and thickness of the surface finish can vary considerably.
Flexibility, crease behaviour and finish adhesion should therefore be evaluated in relation to the intended product and construction.
Suede has a soft, fibrous surface created by abrading the flesh side of the hide or a split layer of leather.
Its raised nap gives the material a warm, tactile appearance. Because the direction of the nap reflects light differently, the colour may appear lighter or darker when viewed or brushed from different angles.
Thickness, strength, nap consistency, colour fastness and reinforcement requirements should be considered when selecting suede for footwear, bags or other leather goods.
Nubuck is produced by lightly abrading the grain surface of the leather to create a fine, velvety nap. Compared with suede, its nap is generally shorter and more subtle.
The surface may show tonal movement when touched or brushed and can develop marks through handling and wear.
These characteristics contribute to its natural appearance but should be considered in relation to the product’s intended use, performance and care requirements.

Pull-up and waxed leathers are treated with oils, waxes or both. When the leather is folded, stretched or handled, these substances move within the material and create lighter tonal areas.
Creases, marks and colour movement are part of the intended character of this type of leather rather than signs of damage. Pull-up effects are frequently used for boots, casual footwear, bags and accessories intended to develop a richer patina through use.
Shade variation, cutting placement and the expected movement of oils or waxes should be considered during development.

Embossing uses pressure, and often heat, to create a pattern or texture on the leather surface. It may produce pebbled, geometric, reptile-inspired or other decorative effects. Printing can introduce colour, imagery, pattern or additional visual depth.
Pattern scale, direction, repetition and alignment should be considered during cutting and assembly. The material must also be assessed for possible distortion when it is folded, stitched or lasted over a three-dimensional form.
The clarity and depth of an embossed or printed finish may vary between hides and production batches.

Patent leather has a sealed, high-gloss surface, while other coated leathers may range from softly polished to matt, metallic or highly reflective finishes.
These treatments can create a distinctive formal or fashion-led appearance, but the coating may influence flexibility, breathability, adhesion and crease behaviour. The material should therefore be tested for compatibility with the intended construction, finishing process and use.
Specialist materials may include hair-on hides, metallic, distressed or perforated leathers, exotic and exotic-effect surfaces, two-tone treatments and other bespoke finishes.
Each material should be evaluated individually according to its thickness, structure, usable cutting area, pattern direction, symmetry, reinforcement requirements and expected performance.
Availability, consistency, minimum quantities, lead times and any relevant sourcing or documentation requirements will depend on the particular material and project.
Footwear uppers may also incorporate canvas, denim, woven textiles, knitted materials, synthetics or other technical materials.
These options can be used independently or combined with leather to create different levels of flexibility, breathability, structure and visual contrast.
The material must be tested for cutting, stitching, reinforcement, lasting and compatibility with the selected construction method.
The materials inside a shoe are as important as those visible on the outside.
Linings, heel grips, toe puffs, counters, reinforcement tapes, insocks and footbeds affect comfort, stability, moisture management and the way the footwear maintains its shape.
Their selection depends on the style, construction, performance requirements and intended market position of the product.
The outsole and midsole influence the weight, flexibility, grip, durability and overall appearance of the footwear.
Common options may include:
The chosen sole must be compatible with the last, upper design, construction method and intended use of the footwear.
Availability may depend on existing moulds, minimum production quantities or the development of a custom sole.
Leather is a natural material, and no two hides are exactly alike.
Variations may occur between separate hides, different production batches and individual areas of the same hide. These differences are an inherent feature of genuine leather and contribute to the character of the finished material.
Natural variations may include:
These characteristics should not automatically be considered defects. Their visibility and acceptability depend on the leather type, finish, product category and agreed quality requirements.
The leather images shown on this website are intended to provide a representative visual guide.
Although reasonable care is taken when preparing and presenting material imagery, digital images cannot guarantee an exact representation of the physical leather.
The appearance of a colour or finish may be affected by:
As a result, a leather viewed online may appear lighter, darker, warmer, cooler, more matt or more glossy than the physical material.
Even where standard tannery colours or finishing references are used, minor variations may occur between hides and production batches.
Where precise colour, grain, texture or finish matching is important, we recommend requesting and approving a physical leather swatch or material sample before production.
A physical sample provides a more reliable indication of the material than a digital image. However, it should still be understood that natural variations may occur between the approved sample and the hides supplied for production.
Unless otherwise agreed in writing, an approved physical sample should take precedence over website imagery or digital colour references.
Material approval should take place before bulk cutting or production begins.
Leather and material availability may change according to tannery stock, supplier lead times, seasonal colour ranges and production schedules.
Certain materials may also be subject to:
Where an exact material is unavailable, a suitable alternative may be proposed for review and approval.
No alternative material should be considered confirmed until its colour, finish, performance and commercial conditions have been accepted.
Materials naturally react to wear, movement, moisture, light, heat and handling.
Depending on the leather or finish, changes may include:
These changes may form part of the expected ageing process of the material.
The intended use, care requirements and expected product lifespan should therefore be considered during material selection.
Tell us about your product, preferred appearance, intended use and production requirements.
Our team will help you evaluate suitable leather, finishes and footwear materials before sampling or production begins.
Smerilli Design Manufacturing Pty Ltd
Shop 1, 10 Industrial St, George Industria, George, South Africa
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