What are Trampolines Made Of: Materials & Components

If you’ve ever watched a child bounce gleefully on a trampoline and wondered what exactly is making that happen — you’re asking a better question than you might think. The materials that go into a trampoline determine everything: how well it bounces, how long it lasts, how safe it is, and how it holds up against sun, rain, and years of enthusiastic jumping.

This guide breaks down every component of a modern trampoline — the frame, the mat, the springs, the padding, and the safety enclosure — and explains what they’re made of, why those materials were chosen, and what to look for when buying.

The Main Components of a Trampoline

A standard backyard trampoline has five main components, each made from different materials chosen for specific performance characteristics:

1. The frame
2. The jumping mat
3. The springs
4. The spring padding (safety pad)
5. The safety enclosure net

1. The Frame

Material: Galvanized steel

The frame of a trampoline is almost universally made from galvanized steel — steel that has been coated with a layer of zinc to protect it from rust and corrosion. The zinc coating is applied through a process called hot-dip galvanization, where the steel is submerged in molten zinc at high temperatures, creating a bond at the molecular level rather than just a surface coating.

Why steel? Because it combines the three properties a trampoline frame needs most: strength to support significant weight and jumping forces, flexibility to absorb and distribute those forces without breaking, and cost-effectiveness to keep trampolines affordable for families.

What to look for

• Gauge thickness — thicker gauge steel (lower gauge number) is stronger and more durable. Look for 14-gauge or heavier for a family trampoline
• Hot-dip vs powder coating — hot-dip galvanization lasts significantly longer than powder-coated or painted steel. Check the manufacturer’s specifications
• Frame warranty — a reputable manufacturer will offer at least a 3-year frame warranty; premium brands like Springfree offer 10 years

2. The Jumping Mat

Material: Woven polypropylene

The jumping surface of most trampolines is made from woven polypropylene — a synthetic polymer that is lightweight, strong, UV-resistant, and able to withstand repeated stretching and compression without tearing.

Polypropylene mats are woven in a tight crosshatch pattern, which distributes force across the mat surface evenly and prevents any single thread from bearing the full load of a jump. The tighter the weave, the stronger and more responsive the mat.

Higher-end trampolines sometimes use perforated polypropylene mats — mats with small holes throughout the surface. The holes allow air to pass through the mat rather than resistance it, which reduces air resistance and produces a more efficient, higher bounce. Olympic-level trampolines use a fiberglass rod and string bed rather than polypropylene, which is why competitive trampolines bounce so dramatically higher than backyard models.

What to look for

• UV treatment — polypropylene degrades in sunlight without UV stabilization. Check that the mat is UV-treated or UV-stabilized
• Stitch density — more stitches per square inch means a stronger mat. Premium mats use double-stitched or triple-stitched seams at attachment points
• Mat warranty — look for at least 2 years. Mats wear faster than frames and replacement mats should be available from the manufacturer

3. The Springs

Trampoline Spring Material

Material: Tempered steel

Trampoline springs are made from tempered steel — steel that has been heat-treated to increase its hardness and elasticity. Tempering involves heating the steel to a specific temperature and then cooling it rapidly, a process that rearranges the steel’s molecular structure to make it both harder and more resistant to deformation under stress.

The spring is the most mechanically critical component of a trampoline. It must be able to stretch significantly under the weight and momentum of a jumping person, store that energy, and release it quickly and completely hundreds of thousands of times without losing its shape or elasticity. Tempered steel achieves this better than any other commercially viable material.

Spring quality factors

• Wire gauge — thicker wire produces a stiffer, more powerful spring. Most family trampolines use 16–18 gauge spring wire; premium models use 14 gauge or heavier
• Coil count — more coils per spring = smoother, more consistent energy storage and release
• Length — longer springs produce a softer, higher bounce; shorter springs produce a stiffer, lower bounce. Most backyard trampolines use springs between 5.5 and 8.5 inches long
• Coating — springs should be galvanized or zinc-coated to resist rust. Uncoated springs corrode quickly outdoors, especially in humid climates

Springless trampolines

Some premium trampolines — most notably the Springfree brand — replace steel springs with flexible fiberglass composite rods positioned beneath the mat. These rods perform the same energy-storage function as springs but without the gap between the mat edge and the frame where children’s fingers and toes can get caught. Springless trampolines are generally considered safer for this reason, though they carry a significantly higher price tag.

4. The Spring Padding (Safety Pad)

Material: PVC cover with foam interior

The padding that covers the springs and the frame edge is typically made from a PVC (polyvinyl chloride) outer cover filled with closed-cell foam. The PVC provides weather resistance and durability, while the foam provides cushioning to absorb impact if a jumper lands on the edge rather than the mat.

The thickness and density of the foam matters significantly. Thin or low-density foam compresses quickly under impact and provides minimal protection. High-quality spring pads use foam that is at least 1.5 inches thick with a density of at least 1.5 lbs per cubic foot.

What to look for

• Foam thickness — minimum 1.5 inches; 2 inches or more is better for high-use family trampolines
• UV-resistant cover — cheap PVC cracks and fades quickly in sunlight. Look for UV-stabilized PVC or high-density polyethylene covers
• Full coverage — the pad should cover all springs completely with no gaps. Check that coverage extends at least 3 inches onto the mat surface
• Secure attachment — pads should be tied or strapped to the frame securely, not just resting on top

5. The Safety Enclosure Net

Material: Polyethylene or polyester mesh

Safety enclosure nets are made from woven polyethylene or polyester mesh — synthetic materials chosen for their combination of strength, flexibility, and UV resistance. The mesh is designed to be strong enough to catch a falling child without tearing, flexible enough to absorb the impact rather than bouncing them back with force, and open enough that jumpers can see through it and air can circulate.

The net is attached to vertical poles — typically made from the same galvanized steel as the frame — and connects to the mat or frame at the bottom. Higher-end trampolines use poles that are padded and curve outward from the jumping surface, so that a jumper who hits the net is directed inward and downward rather than outward and off.

What to look for

• Mesh density — tighter mesh catches smaller body parts and is more durable, but reduces visibility. A balance of 4–6 mesh holes per inch is typical of quality nets
• UV resistance — polyethylene nets degrade in UV without stabilization. Check that the net is UV-treated
• Entry closure — the door in the net should close securely from both inside and outside, and be designed so young children cannot open it from outside
• Pole padding — poles should be padded for the full length that a child could contact them

How Material Quality Affects Safety

Trampoline safety is directly tied to material quality. The most common trampoline injuries fall into two categories — falls through or off the trampoline (frame and enclosure quality), and impact injuries from landing on springs or frame edges (padding quality). Both are preventable with better materials.

The Consumer Product Safety Commission (CPSC) tracks trampoline injuries and consistently finds that injuries are more common on cheaper trampolines with thinner padding, lower-quality nets, and frames that flex unevenly under load. Investing in higher-quality materials is not just about bounce performance — it’s a direct safety investment.

How Long Do Trampoline Materials Last?

Frequently Asked Questions

Are trampolines waterproof?

The materials used in quality trampolines — galvanized steel, polypropylene, polyethylene — are all water-resistant rather than truly waterproof. They are designed to withstand rain and outdoor exposure, but prolonged standing water accelerates corrosion and UV exposure degrades all materials over time. Covering your trampoline when not in use significantly extends its lifespan.

Can you jump on a wet trampoline?

Technically yes, but we strongly advise against it. A wet polypropylene mat is significantly more slippery than a dry one, dramatically increasing the risk of falling. The increased injury risk from wet jumping is not worth the marginal bounce improvement some people report from a damp mat.

What is the safest trampoline material?

Springless trampolines using fiberglass composite rods instead of steel springs are generally considered the safest design — they eliminate the gap between the mat and frame where fingers and toes can get caught in springs. Within spring trampolines, thicker padding, galvanized steel frames, and UV-treated polypropylene mats are the quality indicators most associated with safer products.

Why do trampoline mats turn grey?

Grey discoloration in a polypropylene jumping mat is caused by UV degradation — sunlight breaks down the polymer chains in the material, causing it to fade and lose elasticity. A greying mat is approaching the end of its useful life. UV-stabilized mats fade more slowly, but all outdoor polypropylene will eventually degrade with sun exposure.

Sources and References

Last verified April 2026.

• Consumer Product Safety Commission (CPSC). Trampoline Safety. cpsc.gov.
• American Academy of Pediatrics. Trampoline Safety in Childhood and Adolescence. healthychildren.org. Updated 2024.
• American Society for Testing and Materials (ASTM). Standard Consumer Safety Specification for Trampolines. ASTM F381.

Parenting Pod | parentingpod.com | Last updated April 2026