AK Synth V4 waist harness is a so-called hard back waist harness. Hard shell harnesses are already common good for kitesurfers. We now also clearly see the trend towards hard shell harnesses within windsurfing and wind foiling. AK Durable Supply Co is a quirky brand that now also brings the knowledge of kiting to windsurfing and wind foiling with the AK Synth V4 trapeze.

AK Synth hard back for best back support

The big advantage of the AK Synth hard back is that the forces are much better distributed over a very wide part of the lower back. This not only ensures that you have less chance of suffering from your back, but this also allows you to convert the forces to your rigging and you have a more direct feeling with the sail.

Especially for wind foilers who like to foil with larger sails, wearing a hard back is a must. It gives more feeling and ultimately more control.

Compared to the AK Method hard back harness, the back of the AK Synth is 20% higher. As a result, the AK Synth hard back harness supports the back over a larger surface area compared to the AK Method. However, due to the torsional flex of the hard shell, the freedom of movement is still very large.

AK Synth comfortable due to thick layer of neoprene

To ensure that a hard back is also comfortable, the inside of the harness is provided with a thick layer of neoprene. This ensures that the harness is soft and comfortable. After an hours-long session on the water, you notice that the back has been less stressed.

AK Synth vs AK Method hard back harness

In addition to the AK method, AK also has the AK Synth hard back harness. What are the differences?

• The back of the AK Method is 20% higher than the AK Synth
• The Synth gives more support in the back
• The shell of the AK Synth contains more flex than the AK Method

AK Synth harness, which size to choose?

• Look for the right size in the size chart
• The harness are about a 1/2 size smaller
• Depending on the size, an S, M or L hook is included

AK Synth harness questions or try?

Do you want to try the AK Synth V4 or AK Method harness or do you have questions? Feel free to send us an email with your questions.