Slumberkins Hammerhead Birthday パーティーハット

This sweet birthday party hat design features the lovable Slumberkins Hammerhead character with a cheerful smile and soft pastel blue tones that feel calm, friendly, and perfectly kid-focused. The playful “Happy Birthday” text arches above the character, while a customizable name below adds a fun personal touch that makes the celebration feel extra special. The clean layout and gentle color palette create a modern, soothing look that works beautifully for toddlers and young children, especially for ocean- or shark-themed birthday parties. This design is ideal for creating a coordinated, character-inspired celebration that feels joyful without being overwhelming.