What's the difference?
The numbers correspond to the amount of denier (the density of the material used to achieve compression) in each pair of tights. For example, a Venere 140 will feature more compression than a Venere 30.
Wonder Model 30 Sheer, Wonder Model 70 Sheer, Wonder model 140 Opaque
This tights line has a special form-fitting top that slims your figure, contains your tummy and refines your silhouette. Graduated compression improves circulation and offers relief to your legs, keeping them fresh and rested all day long. A soft anatomical sole in relief offers a soft support base to the foot. Available in various compression classes.