Studio Kat Designs – the Expand-o-Matic Paper Pattern

Meet the Expand-o-Matic by Studio Kat Designs — a clever, versatile shoulder bag that adapts to your day. Designed with both style and function in mind, this bag offers everyday organization with a hidden surprise: a wraparound expansion zipper that instantly increases your storage space when you need it most.

With the expander closed, the bag maintains a sleek, compact profile. When extra room is needed, simply unzip the expansion panel to nearly double the bag’s capacity — perfect for those moments when you need to carry just a little more.

Thoughtful pocket placement keeps everything organized, including two exterior pockets (one drop-in and one zippered) for quick access, plus an interior zippered pocket to secure your essentials.

This printed paper pattern includes templates and step-by-step instructions, making it a rewarding project for confident sewists looking to expand their bag-making skills.

Features:

• Expandable design with wraparound zipper

• Compact profile that doubles in capacity when expanded

• Two exterior pockets: one drop-in, one zippered

• One interior zippered pocket

• Adjustable shoulder bag style

Pattern Details:

• Printed paper pattern with templates included

• Technique: Standard machine sewing

• Skill Level: Intermediate

Recommended Hardware:

• Invisible magnetic snap

• 1” snap hook

• 3/4” D-rings

Designed by Kathy Southern for Studio Kat Designs, the Expand-o-Matic is the perfect blend of practicality and innovation — a bag that grows with you.