We advise selecting blade stiffness in correlation with your overall weight and physique;

Men

• Stiffness 0 - Extra Soft - Weight under 40kg (~90 lbs).
• Stiffness 1 - Soft - Weight between 40-60 kg (90~130 lbs).
• Stiffness 2 - Medium Soft - Weight between 60~75 kg (130~165 lbs).
• Stiffness 3 - Medium - Weight between 75~90 kg (165~200 lbs).
• Stiffness 4 - Medium Hard - Weight between 90~105 kg (200~230 lbs).
• Stiffness 5 - Hard - Weight over 105 kg (230 lbs).

Women

• Stiffness 0 - Extra Soft - Weight under 45kg (~100 lbs).
• Stiffness 1 - Soft - Weight between 40-60 kg (100~155 lbs).
• Stiffness 2 - Medium Soft - Weight over 70 kg (155 lbs).