From the manufacturer's page:
Every day, Kids II strives to create the best, most reliable products for you and your child. In doing so, we stay true to our mission of putting the safety and happiness of children and parents first in everything we do.

Because of this commitment, Kids II, in cooperation with the U.S. Consumer Product Safety Commission (CPSC), is voluntarily recalling approximately 400,000 Baby Einstein Musical Motion Activity Jumper Sun Toys.

The recall includes yellow sun toys made before November 2011. The date code is located in the lower right corner of the sewn-in label at the back of the blue seat pad. Only the following date codes are included in the recall:

OD0, OE0, OF0, OG0, OH0, OI0, OJ0, OK0, OL0, OA1, OB1, OC1, OD1, OE1, OF1, OG1, OI1, OJ1, OK1

If you have a product that has one of the date codes listed above, please immediately stop using the product. CLICK HERE for information on receiving a free replacement.

PRODUCTS MADE AFTER NOVEMBER 2011 AND ALL CURRENT INVENTORY AT RETAIL STORES ARE NOT AFFECTED NOR SUBJECT TO THIS RECALL.
http://www.kidsii.com/t-90564Rec201306.aspx