| 摘要 |
Improved sports footwear comprising an insert positioned at least in the heel region, the insert comprising an elastically deformable cellular structure arranged within an elastically deformable air-impermeable casing provided with inner projections on opposing faces, the casing being pneumatically connected to controllable means, rigid with the footwear, for varying the air pressure within the casing so as to modify the elastic characteristics of the insert, each projection on one face being connected to a projection on the other face. <IMAGE> |
