How it surfs
The magazine's conclusion on ride quality is unusually specific. Early lift is described as exceptional but not overpowering, helping riders catch waves they would otherwise let go, while the wing still takes steep drops without pitch instability.
Pump is the standout. The tester wrote that every pump feels like you are pushing off something solid that pushes back, and that the low stall speed lets you pump out of a hole where most foils would already have stalled.
On sizing, the review is direct: the 140 suits most riders looking for manoeuvrability and responsiveness, or riding in stronger wind and waist to head-high surf. The 170 gives more pump, stability and lift for larger riders or for smaller, weaker conditions. If you are choosing between them, the 140 is the surf and turn option and the 170 is the glide and downwind option.
Volume & sizing chart
Use the chart below as a starting point. Add half a litre if you are less experienced, subtract half a litre for a looser feel.
| Size | Volume | Rider weight | Best for |
|---|---|---|---|
| Progression 140 | 903 cm² | Riders wanting manoeuvrability in stronger wind or waist to head-high surf | Intermediate to advanced |
| Progression 170 | 1097 cm² | Larger riders, or lighter riders in small conditions | Beginner to advanced |
How it compares
| Board | Best at | Wave range | Aggregate score |
|---|---|---|---|
| Unifoil Progression 170 | More pump and lift | Prone / downwind / SUP | 9.4 |
| Unifoil Progression 200 | Maximum low-speed lift | Prone / downwind | 9.3 |
| Unifoil Vyper 130 | High-speed performance | Prone / tow | 9.2 |
Verdict
The size in the Progression range that best balances glide and turning. Verified at 903 cm² and an 8.9 aspect ratio, it holds pitch on steep drops, pumps out of holes that would stall other wings, and only gives ground to the 170 when a rider needs more lift.