Happy Camp3r Puff Series Mock Neck Sweatshirt. The Happy Camp3r Puff Series Mock Neck Sweatshirt in green offers cozy, cheerful style with a pop of color. Featuring large puff-ink text in yellow reading “Happy Camp3r Since 2020” on the front, the ribbed mock neck, cuffs, and hem are color-matched in green for a cohesive look. Fleece-lined for warmth and comfort, this sweatshirt pairs relaxed fit with playful, outdoorsy vibes, perfect for layering or wearing on its own. 70% Polyester 30% Cotton. Machine wash. Imported.