Create a custom, eco-conscious bed your big dog will actually love. The Molly Mutt Huge Dog Stuff Sack in black is designed to turn your soft, worn-in textiles into a supportive, washable mattress that fits inside your Molly Mutt dog bed cover.

Comfort built from what your dog already loves

Dogs are naturally comforted by your scent. By filling this stuff sack with your old T‑shirts, sweatshirts, towels, and pillows, you create a bed that smells like home and helps anxious or sensitive dogs feel more secure.

• Use old clothes, blankets, and pillows as filling
• Shapes loose textiles into a supportive dog mattress
• Helps comfort dogs with separation anxiety or stress

Perfect fit for big dogs

This huge size is made for large and giant breeds, giving them room to stretch out without hanging off the edge.

• Ideal for dogs weighing approximately 70–120+ lbs
• Overall size: 36" diameter x 45" width x 5" height
• Fits inside corresponding Molly Mutt huge duvet covers

Easy to wash, easy to refresh

Cleaning your dog’s bed doesn’t have to be a chore. The stuff sack keeps all your filling contained so you can wash everything at once.

• Entire filled sack can go straight into the washing machine*
• Mesh design allows water and detergent to circulate freely
• Quick to empty and refill when you want to swap out textiles

*Always follow care instructions for the fabrics you use as filling.

Durable, breathable construction

Built to handle daily use, this stuff sack is made from sturdy yet breathable materials that help keep your dog’s bed fresher between washes.

• 100% nylon mesh body for airflow and odor control
• Secure zipper closure keeps filling contained
• Gusseted sides help maintain shape and even loft

Simple, sustainable bed solution

Instead of buying bulky foam inserts, reuse what you already have. This system helps reduce waste while giving your dog a bed that can be customized for firmness and height.

• Repurpose textiles you’d otherwise donate or discard
• Adjust firmness by adding or removing filling
• Replace worn-out contents without buying a new bed core

At a glance

• Product: Molly Mutt Dog Stuff Sack – Huge
• Color: Black
• Material: 100% nylon mesh, zippered and gusseted
• Size: 36" d x 45" w x 5" h
• Recommended weight range: 70–120+ lb dogs
• Designed to fit inside Molly Mutt huge dog bed covers

If you already have a Molly Mutt duvet cover or want a flexible, DIY-style bed for your large dog, this huge black stuff sack is the essential inner layer that keeps everything tidy, supportive, and easy to clean.

Additional information