The Spring Eggs line is currently featured at the Pokémon Center for spring 2017. It consists of two Egg-shaped cushions of Eevee and Pikachu for $29.99 each and a Spring Eggs Relaxed Fit Crewneck T-Shirt for $24.95. A four-pack set of egg-shaped Pokémon pins is also listed for $24.99, featuring Pikachu, Eevee, Piplup and Chansey. All of these products can be purchased via the official Pokémon Center website.
Source: Pokémon Center