Big Mo Kids Sleeping Bag (18-36 months)

$179.95 Regular price
Color - Leapfrog Green
Insulation Type
Condition

The Ultimate Adventure Suit for Tiny Trailblazers

The Big Mo isn't just a sleeping bag—it’s a wearable hug built for s’mores, flashlight tag, and early morning tent snuggles. Designed for the "I can do it!" stage of life, this bag gives your toddler the freedom to use their hands and get in and out on their own while ensuring they stay toasty-warm once the stars come out.

Which Big Mo is right for you?

Toggle between our two insulation levels to find the perfect match for your next trip:

20° Down (The Backpacker’s Dream): Insulated with 650-fill power RDS-certified down. This is our warmest and most compact option, weighing only 11.6 oz. It compresses down to the size of a large water bottle, making it the gold standard for family backpacking or high-altitude camping.

40° Synthetic (The Versatile All-Rounder): Filled with cushy, hi-loft polyester fill. This is the "worry-free" bag—it stays warm even if it gets damp and is incredibly easy to wash after a weekend of s'mores. It's the ideal choice for summer car camping and humid environments.

Standard Features

Signature Adjustable Cuffs: Now standard on both the 20° and 40° models! These fold-over cuffs allow toddlers to use their hands to read books or hold a flashlight, then flip closed to seal in heat once they drift off.

Kick-Proof Design: Unlike traditional rectangular bags that toddlers slide out of, the Big Mo is worn like a cozy suit. It stays perfectly positioned all night, ensuring no 3:00 AM wake-ups because the blankets fell off.

Two-Way "Easy-Vent" Zipper: Zips from both the top and bottom. Need to cool down warm toes or check a pull-up? Just unzip the bottom while keeping their core cozy.

Built to Last: Made with a durable PFAS-free 100% Ripstop Nylon shell that resists snags and spills while remaining soft against the skin. Backed by our lifetime warranty.

The Big Mo Baby Sleeping Bag is for children 18-36 months and 30-40in (74-101cm) long.


Big Mo 20 with Down Fill

 Feature Big Mo 20
(down fill)
Best Use Backpacking, 3-season camping
Temperature
Range
20°-60°F (-6°-15°C)
Length 38in (97cm)
Weight 11.6oz (330g)
Insulation Type 650 fill-power RDS-Certified White Duck Down
Fill Weight 5.3oz (150g)
Shell Material 100% Ripstop Nylon

 

Big Mo 40 with Synthetic Fill

 Feature Big Mo 40 (synthetic fill)
Best Use Car camping, summer camping

Temperature
Range

40°-60°F (4°-15°C)
Length 38in (97cm)
Weight 1lb 2oz (498g)
Insulation Type Hi-loft Synthetic Insulation
Fill Weight 12.7oz (360g)
Shell Material 100% Ripstop Nylon

IMPORTANT SIZE, AGE, SAFETY INFORMATION

For children 18 – 36 months and 30-40 in (76-101 cm) long.

1. Only for ages 18-36 months – Younger children can slip down and suffocate inside.

2. Monitor child’s temperature – If child is too warm or shows signs of overheating, remove from sleeping bag.

3. Do not allow your child to walk in sleeping bag.

4. Keep far away from campfire and ignition sources.


Cleaning your Big Mo

For best results, wash inside mesh or fabric laundry bag. Zip closed before laundering. Machine wash cold with like colors, gentle cycle, in a front-loading washer. Use mild powdered detergent or down wash. Rinse at least twice. Remove promptly. Do not wring. Do not use bleach or fabric softeners. Tumble dry low with 2 clean tennis balls. Remove and fluff after each cycle, returning to dryer until fully dry. Do not iron. Do not dry clean.

Pack the Fun.

Ultra-light and ultra-warm, yes. But Big Mo sleeping bags are so much fun to wear, they won't want to take it off.

Features

Warm & Cozy

Whatever the weather, the Big Mo has you covered. Our sleeping bags are puffy, fun to wear, and never get kicked off while sleeping. The enclosed footbox gives room to move little legs while keeping toes extra cozy, and the insulated draft tube helps trap warmth inside.

Premium Insulation

Our down-insulated sleeping bags use 100% RDS-certified down, which guarantees that our down comes from animals that are humanely raised, and never live-plucked or force-fed.

Going synthetic? Our synthetic fill is lofty, cozy, and performs better than down when it gets wet.

Easy Cleaning

After your big adventure, the last thing you want to worry about is a fussy clean-up. Our bags are made from a weather-resistant nylon so you can easily wet and wipe when you’re on-the-go. Once you’re home, toss your sleep sack into your washing machine for quick and easy cleaning.

Trade-In Eligible

YES! This item is eligible for trade-in.

Buy with confidence today & trade it in later for store credit towards your next purchase. 

Interested in learning more? Visit our trade-in page:

Adjustable Cuffs

Hands out during the day. Hands in at night.

Every Morrison Outdoors sleeping bag has adjustable open-and-close cuffs for total hand freedom.

Easy to Pack

Whether you get choose goose down or synthetic fill, the Big Mo Sleeping Bag packs down small for easy carrying.

Weigh Your Options

While the Big Mo 40 with synthetic insulation has all the snug you need for summer camping, you can save weight and camp in colder temperatures with the down-filled Big Mo 20.

Trade-In Your Outdoor Gear for Store Credit

Kids grow fast. That's why we created our trade-in program!

Our Big Mo Kids Sleeping Bags are eligible for trade-in. Buy today, trade-in later & receive store credit towards your next MO purchase!

Learn More

This Purchase Gives Back

To make the world a little happier, we joined the Pledge 1% movement and committed to donating 1% of all sales to charitable causes.

Every quarter we choose a new organization to support.

Learn More

Returns & Exchange

All new sleeping bags are eligible for a free return within 30 days of purchase.

Used sleeping bags are not eligible for returns but can be exchanged for other items.

Full return details here.