Springfree
Springfree Jumbo Square (S155)
$2499
Best Trampolines · head-to-head
Springfree Jumbo Square (S155) vs JumpFlex HERO 15ft
A sourced, side-by-side comparison. JumpFlex HERO 15ft is cheaper at $1299. Every spec and price links to its source.
JumpFlex
JumpFlex HERO 15ft
$1299Cheaper
2 sellers$1198–$1299under listread
Released 2024
Which is better: the Springfree Jumbo Square (S155) or JumpFlex HERO 15ft?
They split the 2 specs we compare evenly. The JumpFlex HERO 15ft is the cheaper at $1299.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec |  Springfree Jumbo Square (S155) |  JumpFlex HERO 15ft |
|---|---|---|
| US price | $2499 | $1299 |
| Brand | Springfree | JumpFlex |
| Released | — | 2024 |
| Shape | square | round |
| Frame size (ft) | 13 | 15 |
| Jumping area sq (ft) | 155 | — |
| Spring system | fiberglass-rod | coil-spring |
| Spring count | — | 96 |
| Spring length (in) | — | 7.1 |
| Max user weight (lb) | 220 | 350 |
| Total weight capacity (lb) | 1500 | 550 |
| Galvanized frame | Yes | Yes |
| Warranty years | 10 | 10 |
| Astm certified | Yes | Yes |
Sources — Springfree Jumbo Square (S155): springfreetrampoline.com (verified 2026-10-20). JumpFlex HERO 15ft: jumpflex.com (verified 2026-10-15).
What's the difference between the Springfree Jumbo Square (S155) and JumpFlex HERO 15ft?
Where the two actually differ on the specs we track (5 of 11). Matching specs are omitted.
- Shape: Springfree Jumbo Square (S155) square vs JumpFlex HERO 15ft round
- Frame size (ft): Springfree Jumbo Square (S155) 13 vs JumpFlex HERO 15ft 15
- Spring system: Springfree Jumbo Square (S155) fiberglass-rod vs JumpFlex HERO 15ft coil-spring
- Max user weight (lb): Springfree Jumbo Square (S155) 220 vs JumpFlex HERO 15ft 350
- Total weight capacity (lb): Springfree Jumbo Square (S155) 1500 vs JumpFlex HERO 15ft 550