Email Us

Types of light weight waterproof material, use and applications

  • Polyurethane (PU): PU is a synthetic polymer that is lightweight and highly water-resistant. It is often used to make clothing, footwear, and outdoor gear.

Uses: PU is used to make a variety of products, including raincoats, jackets, tents, backpacks, shoes, and pool floats.

Applications: PU is used in a variety of applications, including:

Clothing: PU is used to make waterproof and breathable clothing, such as raincoats and jackets.

Footwear: PU is used to make waterproof and comfortable footwear, such as hiking boots and sneakers.

Outdoor gear: PU is used to make durable and weatherproof outdoor gear, such as tents, backpacks, and sleeping bags.

Waterproof Materials Quick Reference Matrix

Material NameKey CharacteristicCommon IndustryWaterproof vs. Breathable
Flashspun Hypak™Ultra-Light / FlashspunMedical, Building, PackagingSuperior & Highly Breathable
Polyurethane (PU)Flexible / SyntheticClothing & Outdoor GearWaterproof & Moderate Breathability
NeopreneThermal / ElasticWatersports & DivingWaterproof & Non-breathable
ETFETransparent / DurableArchitecture & GreenhousesWaterproof & High Transparency
PTFE (Teflon)Non-stick / ResistantCookware & Industrial SealsWaterproof & Chemical Resistant


  • Neoprene: Neoprene is a synthetic rubber that is lightweight, flexible, and waterproof. It is often used to make wetsuits, diving suits, and other protective gear.

Uses: Neoprene is used to make a variety of products, including wetsuits, diving suits, gloves, boots, and insulation.

Applications: Neoprene is used in a variety of applications, including:

Watersports: Neoprene is used to make wetsuits and diving suits that protect swimmers and divers from the cold water.

Protective gear: Neoprene is used to make gloves, boots, and other protective gear that protects workers from the cold and harsh conditions.

Insulation: Neoprene is used to make insulation for pipes, buildings, and other structures.


  • Ethylene tetrafluoroethylene (ETFE): ETFE is a synthetic fluoropolymer that is lightweight, transparent, and waterproof. It is often used to make greenhouses and coverings for buildings.

Uses: ETFE is used to make a variety of products, including greenhouses, coverings for buildings, and medical implants.

Applications: ETFE is used in a variety of applications, including:

Greenhouses: ETFE is used to make lightweight and durable greenhouses that allow for maximum light transmission.

Building coverings: ETFE is used to make lightweight and transparent coverings for buildings, such as roofs and windows.

Medical implants: ETFE is used to make biocompatible medical implants that are resistant to corrosion and infection.


  • Polyethylene terephthalate (PET): PET is a synthetic polyester that is lightweight, strong, and waterproof. It is often used to make bottles, food packaging, and clothing.

Uses: PET is used to make a variety of products, including bottles, food packaging, clothing, and fibers.

Applications: PET is used in a variety of applications, including:

Bottles: PET is used to make lightweight and durable bottles for water, soda, and other beverages.

Food packaging: PET is used to make flexible and airtight packaging for food products.

Clothing: PET is used to make wrinkle-resistant and moisture-wicking clothing.

Fibers: PET is used to make fibers for textiles, such as fleece and polyester.


  • Polyvinyl chloride (PVC): PVC is a synthetic plastic that is lightweight, inexpensive, and highly waterproof. It is often used to make raincoats, boots, awnings, and pipes.

Uses: PVC is used to make a variety of products, including raincoats, boots, awnings, pipes, and flooring.

Applications: PVC is used in a variety of applications, including:

Construction: PVC is used to make pipes, windows, and siding for buildings.

Packaging: PVC is used to make flexible and waterproof packaging for food, beverages, and other products.

Footwear: PVC is used to make lightweight and durable footwear, such as rain boots and sandals.


  • Ethylene vinyl acetate (EVA): EVA is a synthetic copolymer that is lightweight, flexible, and waterproof. It is often used to make footwear, sleeping bags, and insulation.

Uses: EVA is used to make a variety of products, including footwear, sleeping bags, insulation, and padding.

Applications: EVA is used in a variety of applications, including:

Footwear: EVA is used to make lightweight and comfortable footwear, such as sneakers and sandals.

Sleeping bags: EVA is used to make warm and insulating sleeping bags.

Insulation: EVA is used to make insulation for homes, boats, and other structures.


  • Polytetrafluoroethylene (PTFE): PTFE, also known as Teflon, is a synthetic fluoropolymer that is lightweight, non-stick, and waterproof. It is often used to make cookware, coatings, and seals.

Uses: PTFE is used to make a variety of products, including cookware, coatings, seals, and gaskets.

Applications: PTFE is used in a variety of applications, including:

Cookware: PTFE is used to make non-stick cookware that is easy to clean.

Coatings: PTFE is used to make coatings that are resistant to water, oil, and heat.

Seals: PTFE is used to make seals that are airtight and watertight.


  • Polyurethane foam (PUF): PUF is a type of polyurethane that is lightweight, flexible, and highly water-resistant. It is often used to make sleeping pads, insulation, and protective padding.

Uses: PUF is used to make a variety of products, including sleeping pads, insulation, protective padding, and packaging.

Applications: PUF is used in a variety of applications, including:

Camping: PUF is used to make lightweight and comfortable sleeping pads for camping.

Insulation: PUF is used to make insulation for homes, buildings, and vehicles.

Protective padding: PUF is used to make protective padding for helmets, gloves, and other equipment.


  • Silicone rubber: Silicone rubber is a synthetic rubber that is lightweight, flexible, and waterproof. It is often used to make gaskets, seals, and medical implants.

Uses: Silicone rubber is used to make a variety of products, including gaskets, seals, medical implants, and cookware.

Applications: Silicone rubber is used in a variety of applications, including:

Gaskets and seals: Silicone rubber is used to make seals that are airtight and watertight.

Medical implants: Silicone rubber is used to make medical implants that are biocompatible and resistant to infection.

Cookware: Silicone rubber is used to make non-stick cookware that is safe for use at high temperatures.


Experience the future of waterproofing with Hypak™ light weight waterproof material, the industry leader in water-resistant innovation. With our advanced technology and commitment to excellence, we continually push the boundaries of what's possible in waterproof materials. From breathable fabrics to moisture-proof coatings, Hypak™ offers a comprehensive range of solutions designed to meet the evolving needs of various industries. Elevate your products with Hypak™ and stay ahead of the competition with unparalleled waterproofing performance.


Knowledge Center: Common Questions on Waterproof Materials

What is the best lightweight material for building insulation and protection?

For traditional thermal insulation, Polyurethane Foam (PUF) and EVA are industry standards due to their low density and high R-value. However, for the building envelope where both waterproofing and breathability are critical, Flashspun Hypak™ is the superior choice. Unlike standard foams, it prevents interstitial condensation and mold growth by allowing vapor to escape while maintaining a lightweight structural load.

Which waterproof materials are safe and effective for medical use?

Silicone rubber and ETFE are widely used for medical implants and laboratory equipment due to their exceptional biocompatibility and chemical resistance. For medical sterilization packaging, Flashspun Hypak™ is the industry leader. It provides an unmatched microbial barrier and high tear strength while remaining ultra-lightweight, ensuring medical instruments stay sterile and safe.

How do I choose between PU, PVC, and Hypak™ for outdoor applications?

The choice depends on the balance of weight and breathability. PVC is cost-effective and highly waterproof but heavy and non-breathable. PU offers better flexibility for apparel. Flashspun Hypak™ provides a unique middle ground: it is significantly lighter than PVC and offers much higher breathability than PU, making it ideal for high-end outdoor protective gear.

Kingwills International Limited
Kingwills™ is committed to becoming the world's most creative material technology enterprise, creating sustainable solutions for a better and happy life for people.