John Whitaker air iron stirrups??

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Can hardly find any reviews of them online. Anyone use them?
After some cheese grater flexi stirrups for under £100 if anyone has any recommendations?

 

[leflynn]

I had some and they are great but prefer my Jins as they are grippier

 

[LA&Murph]

I have some. I found the opposite to leflynn though, the Jin ones really aggravated my dodgy joints! I have the John Whitaker (Metalab) Air irons on my jump saddle, and Acavallo Operas on my dressage. Neither give my knees or ankles any hassle. Big thumbs up from me!

 

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Thanks both