All you'll ever need in a cowtail. Well made with lots of useful information on the label.
What they say:
A fast deploying elasticated attachment for use with PFD harness systems. Allows users to clip themselves into rescue systems.
• Integral stainless ‘O’ ring for PFD harness attachment
• High visibility elasticated webbing - extends to 75cm
• Bar tacked webbing
• WW karabiner- up to 12.5mm deployment
• Neoprene webbing closure reduces karabiner slippage