Devices enabling skis to be used whilst held in a particular configuration with respect to each other, e.g. for training purposes

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Skis or snowboards (sledges with runners, e.g. ski-bobs, B62B13/00; runners for sledges B62B17/02; runners for carrying wheeled vehicles to facilitate travel on snow or ice B62B19/00) > Devices enabling skis to be used whilst held in a particular configuration with respect to each other, e.g. for training purposes