Arm Tunnel Side Sleeper Pillow
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A memory foam pillow built like a low bridge, with a tunnel underneath so a side sleeper's arm can pass through instead of being pinned under the head. It also works as a backrest for reading in bed.
Air it out on arrival. The foam needs 24–48 hours ventilated after unboxing.
- Arm tunnel — an opening under the middle for your arm, usable from either side
- Memory foam — slow-rebound foam that keeps its shape
- Double cover — an inner cover and a cool-feel outer cover that zips off for washing
- Two uses — side sleeping at night, a backrest for reading or TV
- Four colors — sky blue, gray, pink or purple
Muto Space chooses pieces that make a workspace calmer to sit in. It solves the one problem every side sleeper has: where the arm goes.
| Material | Memory foam · cool-feel removable cover |
| In the box | 1 pillow with cover |
| Care | Outer cover zips off · machine washable · air 24–48 h on arrival |
Free U.S. shipping on every order, no minimums. Ships within 1–2 business days and typically arrives in 6–9 business days via USPS, UPS, or FedEx.
You'll get a tracking link by email as soon as it ships. Questions or delays? Email support@mutospace.com. Full Shipping Policy →
At Muto Space, we believe shopping for the space you call home should feel effortless. That's why every order is backed by the Muto Space Guarantee.
Returns are accepted within 30 days, no restocking fees, and refunds land within 7 business days. Full returns policy →
Arm tunnel
Your arm goes through, not under
The opening underneath lets your arm rest straight through while your head stays on the pillow.
Memory foam
Soft on top, supportive below
Slow-rebound memory foam gives under your head and holds the bridge shape over your arm.
Four colors
Sky blue, gray, pink, purple
Each with a cool-feel outer cover that zips off for washing.
Before you buy
Questions about this piece
Can I use it on either side?
Yes. The tunnel works for the left or right arm.
Can I sit up against it?
Yes. It doubles as a backrest for reading or watching TV in bed.
Does it smell when new?
Air it for 24–48 hours after unboxing.
Is the cover washable?
The outer cover zips off and is machine washable.
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A calmer space
Small changes to your environment create real shifts in how you feel and work. Every piece we carry is chosen with that in mind. Not to decorate, but to improve.