The Saint Laurent Classic Sac De Jour Bag is one of the brand's iconic bags under the helm of Hedi Slimane. Here is a simple size comparison of the three sizes that the Sac de Jour is avialable in. The style of the tote is a simple tote bag with double handles and accordion sides. The newest addition to the Saint Laurent Sac De Jour line is the Classic Baby size which is part of the Spring/Summer 2014 Collection. The Saint Laurent Classic Sac De Jour Bag is available in Baby, Small and Large.
Here's a size comparison of the three sizes:
Classic Baby Sac De Jour Bag
The Classic Baby Sac De Jour is the smallest and newest size on this bag style. It measures 22.0 cm x 18.0 cm x 11.0 cm. It retails for $1,990.00 (USD). It includes a removable shoulder strap and it has 1 slot pocket and key ring with padlock keys affixed to the bag's interior.
Classic Small Sac De Jour Bag
The Classic Small De Jour measures 25.0 cm x 32.0 cm x 16.5 cm. It has an interior zip compartment at the center of the bag which also includes 2 slot pockets, 1 zip pocket and a key ring which also has padlock keys fastened to the bag. It retails for $2,550.00 (USD)
Classic Large Sac De Jour Bag
The Classic Large De Jour has the same details with the Small size, the difference is the measurement. The large size measures 40.0 x 31.0 x 20.0 cm and retails for $2,950.00 (USD).
Source: Saint Laurent / MyTheresa