BungyPump Walkathlon - with a double function. Use the poles with built-in resistance or lock them to transform into rigid hiking/walking sticks. Get... | By BungyPump US | Facebook
BungyPump Underrör till Walkathlon, silver - Träningsmaskiner.com
BungyPump walking - Walkathlon model with built-in resistance - YouTube
BungyPump Walkathlon - Nordic Walking Poles with Two-in-one - Training poles with 4 kg / 6 kg built-in resistance and as fixed pole - DigiCamCase.com DiCAPac Shop