The Hertfordshire-based agency is tasked with improving the catalogue's design, creating supporting point-of-sale material for the charity's shops and designing Oxfam Unwrapped gift certificates and vouchers.
Anita Reed, head of design at J2, said: "We're moving the catalogue forward while still retaining the key brand elements. We're including new visual elements but still keeping the fun aspect to it."
The new catalogue launches at the end of September and includes an increased number of unique gifts. These range from a camel in Somalia to blankets and shoes for children in Uganda, school dinners for children in Tanzania and clean water for families in Chad.
More than a million catalogues will be distributed through Oxfam shops and by the charity's supporters.
Stephen Harvey, Oxfam new products manager, said: "We feel that J2 has retained the fun element of the campaign and created concepts that will keep Oxfam Unwrapped in the public eye and help us build on the success of last year's catalogue"
More than 150,000 gifts were sold from the catalogue in 2004, benefiting people in some of the world's poorest countries.
J2 is also creating a dedicated Christmas card mail order catalogue for Oxfam under its 'Gifts that give twice' brand. The brief includes design and possible rebranding work.
The agency's clients include Twinings, Fujifilm Electronic Imaging, Total, Diageo and Littlewoods.
If you have an opinion on this or any other issue raised on Brand Republic, join the debate in the .