# Springfree Jumbo Square (S155) vs Vuly Thunder Pro (Large): specs and price compared

A sourced, side-by-side comparison of the Springfree Jumbo Square (S155) (Springfree) and Vuly Thunder Pro (Large) (Vuly) among trampolines.

## Side by side

| Spec | Springfree Jumbo Square (S155) | Vuly Thunder Pro (Large) |
| --- | --- | --- |
| US price | $2499 | not published |
| Brand | Springfree | Vuly |
| Shape | square | round |
| Frame size (ft) | 13 | 14 |
| Jumping area sq (ft) | 155 | — |
| Spring system | fiberglass-rod | leaf-spring |
| Spring count | — | — |
| Spring length (in) | — | — |
| Max user weight (lb) | 220 | 330 |
| Total weight capacity (lb) | 1500 | — |
| Galvanized frame | Yes | Yes |
| Warranty years | 10 | 10 |
| Astm certified | Yes | — |

## Key differences

- Shape: Springfree Jumbo Square (S155) square vs Vuly Thunder Pro (Large) round
- Frame size (ft): Springfree Jumbo Square (S155) 13 vs Vuly Thunder Pro (Large) 14
- Spring system: Springfree Jumbo Square (S155) fiberglass-rod vs Vuly Thunder Pro (Large) leaf-spring
- Max user weight (lb): Springfree Jumbo Square (S155) 220 vs Vuly Thunder Pro (Large) 330

## Sources

- Springfree Jumbo Square (S155): https://www.springfreetrampoline.com/products/jumbo-square-trampoline (springfreetrampoline.com, verified 2026-07-11)
- Vuly Thunder Pro (Large): https://www.amazon.com/VULY-Thunder-Springless-Trampoline-Enclosure/dp/B0DD9QDXG5 (amazon.com, verified 2026-07-11)

Canonical: https://frontdeskreview.com/gear/trampolines/springfree-jumbo-square-vs-vuly-thunder-pro-large/
Cite: Per The Front Desk Review, Springfree Jumbo Square (S155) ($2499) vs Vuly Thunder Pro (Large) (not published) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/trampolines/springfree-jumbo-square-vs-vuly-thunder-pro-large/
License: CC BY 4.0.