"Cocoon"-Custom Off Grid, 2021 Ram Promaster 3500

About this RV

“Cocoon” is a custom designed 2021 Ram Promaster 3500 extended van built for maximum comfort and adventure. This professional conversion by Interstate Vans, Tyngsborough, MA is fully equipped for boondocking or campgrounds and everything in between. Constructed in the early part of 2022, Cocoon embarked westward in April, on our first 3 month adventure. We are a repurposed couple and our dog Lucky, exploring the beauty and magic of our country. We welcome the opportunity to share our mobile tiny home with like minded people, while we spend time at our New England home base closeby to our 4 grandchildren. “The Lounge”…the U shaped couch converts to a queen size bed in just minutes. The couch accommodates 4 adults and has lots of pillows to get cozy. Whether dining, working or playing the swiveling Lagun table adjusts to the perfect position. Overhead storage cabinets all the way around with dimmable LED lighting, nighttime reading lights and lots of USB ports. There is additional storage below the couches including 2 camp chairs with umbrellas. On each side is a sliding window in combination with the MaxAir roof fan providing unlimited air circulation in either direction. All cabin windows have blackout curtains for privacy and comfort. Above is a 6800 BTU Dometic air conditioner powered directly from the 540 amp Lithium Ion power bank. A 23”Smart TV on a swivel mount is viewable from any position ready to stream from your mobile device. A weBoost cell phone amplifier is positioned in the rear of the lounge. “The Galley”…everything you need; ample storage above and below, work surfaces, USB ports/ AC outlets and a fully equipped kitchen. Includes the following; 2 burner induction cooktop, microwave/convection oven, marine refrigerator/freezer, deep stainless sink, dinnerware, cutlery, cookware, toaster, coffee maker, spices, cups and glasses. The fresh water system consists of; 40 gallon storage, instant 4 gal. Bosch hot water heater on a timer, Accuva UV-LED water purification, 6 gal. gray water tank with auto switch for discreet release below the van, soap dispenser, a 14x14x10 deep stainless sink with pull out spray faucet. Cocoon is equipped with a slide out self contained Separett toilet and privacy curtain, that is easy to use and maintain (no messy cleanup). Fire extinguisher and smoke/CO2 alarm situated in the Galley. Lastly there is a hot/cold outdoor shower in the rear with privacy curtain. “Energy System”…designed for ultimate independence this system starts with 540 Amp hrs of Battle Born Lithium Ion batteries, 3,000 watt Inverter , 600 watts of rooftop solar, 60 amp DC to DC charging while traveling and 20 amp shore power plug in capability. The system is monitored and controlled from a full color touch screen mounted in the overhead galley. This control panel also monitors fresh and gray water levels, cabin temps, battery levels and is accompanied by an Espar Airtronic Cabin heater. This heater is fueled directly from the 24 gallon Promaster gas tank. There is NO propane or generator in Cocoon. No worries, the system manages itself. There are very few buttons to push. Depending on your power needs this system will supply power for 2-4 days without any sun or turning on the engine….tried and tested “Front Cabin”…6 speed automatic/manual transmission, back up camera, large oversized side mirrors, fog lamps, cruise control, AC, USB, Android/Apple connect. “Rear Storage”…the doors swing open to access additional storage, folding camp table, charcoal grill, outdoor shower, water fill up, tools and camp supplies, & AC outlet. Cocoon comes equipped with a lockable swing away bike rack that can hold two 60 lbs. fat tire bikes. On the side of the van is a full length Fiamma awning. LED changeable lighting below the van to light up the ground at your campsite. What's included Complete with bedding and linens. Dinner ware, cookware, cutlery, coffee maker, tea kettle, toaster, camp chairs and table. Recommendations Cocoon has been to The Smokies, Grand Canyon, New Orleans, Sierra Nevada Mtns, San Francisco, Everglades, Sedona, Austin, Blue Ridge Mtns, Big Sur, Gulf Coast, Mohave Desert, Glacier National Park, Yellowstone, Grand Tetons, Badlands, and……. Other things to note We have a strict no smoking or vaping policy. Violation of this rule will result in a $500 charge deducted from the security deposit. Under no circumstances should this vehicle be driven on off-roads, closed or restricted roads. This is not a 4 wheel drive vehicle.Doing so will be a breach of the service rental agreement. The renter will be responsible for any damage to the vehicle. We want you and Cocoon to be safe.

Specs

Year

2021

Make and model

Ram 3500 Extended

Sleeps

2

Beds

2

Seatbelts

2

Length

21 ft

Gross weight

8,000 lb

Fresh water tank

40 gal

Gray water tank

4 gal

Fuel tank

24 gal

Fuel

Gas

Generator

No

Solar

Yes

Inverter

Yes

Amenities

Rules, fees and delivery

Pets

Allowed

Minimum stay

1 night

Turnaround

1 day between rentals

Security deposit

$500

Cleaning fee

$100

Prep fee

$100

Setup fee

$100

Delivery

Not offered on the listing; pick up only

Pickup

Stoughton, MA (30.3 mi from Middleton). The exact address comes from Outdoorsy after you book.

Mileage, generator-hour and insurance charges, and the cancellation policy, aren't in the listing data we receive; Outdoorsy shows them before you pay.

Reviews

• Jennifer C. · 5/5 · Feb 2025 · Outdoorsy

  Excellent, helpful, friendly !

• Ian F. · 5/5 · Oct 2024 · Outdoorsy

  The Cocoon was amazing! My wife and I rented from Donna (also amazing!) for a honeymoon roadtrip. The orientation was super thorough and they have a printed manual with everything that is kept in the van; no issues and everything was really intuitive. There is an instruments cluster over the sink which honestly made everything so easy as far as energy levels, heating, and potable/grey water levels. It drives so…

• Izzy P. · 5/5 · Oct 2024 · Outdoorsy

  We drove the Cocoon for a 2 month road trip across the US and were very happy with our experience. Donna was very responsive throughout the booking process and Marty was extremely thorough in explaining the rig; as well as quick to help with any questions or issues we had while on the road. The van was fully stocked with everything we needed for cooking and camping. The bed was comfortable and easy to assemble.…

• Andrew S. · 5/5 · Jul 2024 · Outdoorsy

  Everything about this experience was perfect. We had a different rental cancel on us last minute and Donna/Marty saved us big time by accommodating our last minute rental request. The Cocoon itself drives very well, had everything that you might need and is extremely cozy. We very much enjoyed our trip and would certainly recommend this rental to anyone who might be interested. You are in great hands with these…

• Macarena R. · 5/5 · May 2024 · Outdoorsy

  Marty and Donna were excellent hosts and their Caccoon RV Van was well stocked with anything needed. I highly recommend them as hosts! Van was clean, and well designed and our own vehicle was kept safe at their location during the trip.

• Eric V. · 5/5 · Oct 2023 · Outdoorsy

  Donna's van is amazing! It has a huge comfortable bed, everything you need to make a great home cooked meal, plenty of power to where you don't need to worry about running out, shades for privacy on all windows (impressively custom-made), and the van drives great! We took the van from pickup and to Vermont, doing a loop through New York and back through Western Mass. The only issues we encountered were minor issues…

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