Inflatable Product Material Guide Single-Layer Drop Stitch Fabric: Structure, Specifications and Applications Single-layer drop stitch fabric is a standard material used to create flat, rigid and pressure-resistant inflatable structures. It is commonly selected for inflatable SUP boards, kayak floors, air decks, sports mats, platforms and other OEM inflatable products where weight, packability and cost must be balanced with structural stiffness. Available Height 3–50 cm Available Width 0.9–2.6 m Base Cloth 500D Polyester Reference Pressure 15 PSI In brief: single-layer drop stitch fabric uses an upper and lower fabric wall connected by thousands of internal spacer yarns. The material supplier may describe this basic structure as “double wall fabric.” This does not mean that it is double-layer laminated, fusion or MSL drop stitch material. What Is Single-Layer Drop Stitch Fabric? Drop stitch fabric is a three-dimensional textile structure. Two parallel polyester base cloth surfaces are connected by dense internal spacer yarns. When air is added, the yarns limit the distance between the two surfaces, allowing the inflatable body to remain flat instead of expanding into a rounded tube. In a standard single-layer construction, the base fabric is coated to provide an airtight surface, but it does not have the additional external laminated reinforcement associated with MSL, fusion or other double-layer constructions. Important terminology: the material factory’s technical sheet uses the name Drop Stitch Fabric (Double Wall Fabric). Here, “double wall” refers only to the upper and lower fabric walls of the drop-stitch core. It is not the same as the double-layer MSL construction commonly discussed in the inflatable SUP industry. How the Material Structure Works Airtight Coating Primer Coating Upper Polyester Base Cloth Internal Spacer Yarns Lower Polyester Base Cloth Primer Coating Airtight Coating Once inflated, the spacer yarns are placed under tension. This internal connection distributes load across the two fabric surfaces and helps the finished product maintain a stable thickness and firm shape. What gives it stiffness? Stiffness comes from the combination of air pressure, fabric dimensions, yarn density, spacer-yarn length and the construction of the finished product. What does “single layer” describe? It describes the standard coated material construction without an additional laminated reinforcing layer. It does not mean the material has only one fabric surface. Main Advantages of Single-Layer Drop Stitch Lower material weight than constructions with an additional reinforcing layer Easier rolling, folding and packing for transport Suitable for many standard recreational inflatable products Helps control material and finished-product cost Provides a flat, stable surface after inflation Available in multiple heights, widths and yarn patterns Single-layer material is often a practical choice for products where low weight, compact packing and competitive pricing are more important than maximum abrasion resistance or the premium stiffness associated with some reinforced constructions. Material limitation: single-layer construction is not automatically suitable for every product. Heavy rental use, frequent contact with rough ground, high structural loads or premium stiffness requirements may justify a reinforced material system. Final material selection should be based on the complete product design rather than the drop-stitch core alone. Available Material Range Available height 3 cm to 50 cm Available width 0.9 m to 2.6 m Regular stock heights 5 cm, 8 cm, 10 cm, 12 cm, 15 cm and 20 cm Available patterns Dot, wave and in-line Base cloth 500D high-tensile polyester Surface Matte Standard roll lengths 30 m, 100 m, 150 m and 250 m Available dimensions and roll specifications should be reconfirmed before ordering because stock status may vary by height, width and pattern. Technical Data Sheet The following values are based on the material factory’s technical data sheet. They are reference specifications for standard single-layer drop stitch material and should be confirmed against the selected production batch before a purchase order is finalized. Specification 5 cm 8 cm 10 cm 12 cm 15 cm 20 cm Pattern Dot Wave Dot / In-line Dot Dot / In-line Dot Base Cloth 500D polyester 500D polyester 500D polyester 500D polyester 500D polyester 500D polyester Spacer Length 5 cm ±5% 8 cm ±5% 10 cm ±5% 12 cm ±5% 15 cm ±5% 20 cm Total Material Weight 2700 g/m² ±200 2700 g/m² ±200 2700 g/m² ±200 2700 g/m² ±200 2700 g/m² ±200 2800 g/m² ±200 Tensile Strength(2 Layers) 4100 × 2800 N/5 cm ±300 4100 × 2800 N/5 cm ±300 4100 × 2800 N/5 cm ±300 4100 × 2800 N/5 cm ±300 4100 × 2800 N/5 cm ±300 3600 × 4100 N/5 cm ±300 Adhesion Strength(2 Layers) 150 × 150 N/5 cm ±20 150 × 150 N/5 cm ±20 150 × 150 N/5 cm ±20 150 × 150 N/5 cm ±20 150 × 150 N/5 cm ±20 150 × 150 N/5 cm ±20 Recommended Pressure 15 PSI 15 PSI 15 PSI 15 PSI 15 PSI 15 PSI Maximum Pressure 30 PSI 30 PSI 30 PSI 30 PSI 30 PSI 30 PSI Standard Width 2.06 m 1.55 / 1.68 m 1.68 / 1.85 m 1.68 / 1.85 m 1.68 / 1.85 m 2.03 m Surface Matte Matte Matte Matte Matte Matte Standard Length 30 / 100 / 150 / 250 m 30 / 100 / 150 / 250 m 30 / 100 / 150 / 250 m 30 / 100 / 150 / 250 m 30 / 100 / 150 / 250 m 30 / 100 / 150 / 250 m How to read “2 Layers” in the table: this wording is retained from the original factory technical sheet. It is a material test description and should not be interpreted as MSL, fusion or an additional double-layer laminated construction. Pressure notice: 15 PSI recommended pressure and 30 PSI maximum pressure are values stated in the material data sheet. The safe working pressure of a completed inflatable product also depends on product dimensions, sidewall construction, seam width, bonding or welding process, valve system, temperature and the required safety margin. Common Applications Application Category Typical Products Material Consideration Water Sports Inflatable SUP boards and kayak floors Balance weight, stiffness, pressure and abrasion requirements Marine Products Air decks and inflatable boat flooring Confirm dimensions, seam construction and load distribution Sports Equipment Air tracks, jumping mats and training mats Select height according to cushioning and structural requirements Inflatable Platforms Floating docks, work platforms and leisure platforms Large sizes may require additional reinforcement and internal chambers Custom Inflatable Structures Pools, screens, walls and other flat inflatable products Material suitability must be assessed for the actual use environment The original material data sheet also lists industrial applications such as flood-control products, temporary noise barriers, lifting cushions and protection walls. These uses require application-specific engineering, testing and safety verification rather than material selection alone. How to Select the Right Specification Start with product thickness Select the drop-stitch height according to the required finished-product thickness, volume, stiffness and intended use. Check the usable material width Match the available roll width with the cutting layout to reduce seams, offcuts and unnecessary material waste. Confirm the complete construction Sidewalls, seams, valves, reinforcement and accessories must be considered together with the drop-stitch core. Selection Factor What the Buyer Should Confirm Height Finished thickness, stability, cushioning, load and packing size Width Product outline, cutting yield, seam positions and material waste Pattern Available specification, appearance and suitability for the product design Working Pressure Finished-product structure rather than the raw material value alone Use Environment Water, sunlight, ground abrasion, temperature and frequency of use Target Market Entry-level, general recreational, rental, professional or heavy-duty use Single-Layer Material: Suitable Uses and Limitations Often suitable when Lower product weight is important The product must roll or pack compactly The project has a cost-sensitive target market The expected use is general recreational use The product design already includes suitable edge reinforcement May be less suitable when Maximum abrasion resistance is required The product will be used intensively for rental Premium stiffness is the main selling point The surface frequently contacts rocks or rough ground The buyer specifically requires an MSL or fusion construction These are general selection principles rather than fixed rules. A well-designed single-layer product can be reliable for its intended market, while a reinforced material cannot compensate for poor seam design, unsuitable glue, incorrect welding settings or inadequate quality control. OEM and Procurement Points to Confirm Before requesting a quotation or approving a production specification, buyers should confirm more than the material height alone. Finished product type and intended use Product length, width and required thickness Target working pressure Required roll width and cutting layout Expected order quantity Standard or custom material color Printing, surface and accessory requirements Target market and expected retail positioning Packing method and required shipping volume Testing requirements for the finished product MOQ, custom color requirements, stock availability and lead time can vary according to height, width, coating, pattern and order quantity. These details should be confirmed for each individual project rather than assumed from the standard technical sheet. Common Purchasing Risks Risk Why It Matters Recommended Action Confusing “double wall” with MSL The buyer may approve a different material structure from the one intended Confirm the actual layer structure with a material section or specification Using material pressure as finished-product pressure Seam and sidewall performance may be lower than the raw material reference Define safe working pressure through completed-product testing Ignoring standard roll width Poor cutting yield can increase material cost and add unnecessary seams Review the cutting layout before confirming the product dimensions Comparing only material weight Similar weight does not guarantee the same yarn, coating or adhesion performance Compare structure, test values, samples and finished-product results Skipping batch confirmation Width, color, finish and tolerances may vary between specifications or batches Approve the final production specification before bulk manufacturing FAQ Is single-layer drop stitch fabric made with only one fabric wall? No. All standard drop-stitch materials have an upper and lower fabric wall connected by internal spacer yarns. “Single layer” means there is no additional outer laminated reinforcement layer. Why does the factory call it double wall fabric? The factory uses “double wall” to describe the two parallel fabric surfaces of the basic drop-stitch structure. It does not refer to the MSL or fusion double-layer construction used in some inflatable SUP boards. Is this article about MSL drop stitch? No. This page focuses on standard single-layer drop stitch fabric. MSL, fusion and other reinforced constructions use a different material structure and should be evaluated separately. What heights are regularly available? The regular stock heights listed in the technical sheet are 5 cm, 8 cm, 10 cm, 12 cm, 15 cm and 20 cm. The broader available range is stated as 3 cm to 50 cm. Can every finished product be inflated to 30 PSI? No. The 30 PSI figure is the maximum value shown in the raw material data sheet. A finished product’s safe pressure depends on its seams, sidewalls, valves, dimensions, production process and safety testing. Is single-layer material always lower quality than MSL? No. It is a different construction for different product and market requirements. Single-layer material can provide lower weight, easier packing and more competitive cost. MSL may be preferred when additional stiffness or abrasion resistance is required. Discuss Your Inflatable Product Project KUDO uses different drop-stitch specifications for OEM and ODM inflatable products. To evaluate a project, please provide the product type, dimensions, quantity, target pressure, intended market, design requirements and required delivery time. Email: contact@kudooutdoors.com WhatsApp: +86 187 5710 3614
