Rivian R1S Pack: What Fits and How to Load It

The Rivian R1S Pack bundles a Foamy for R1S mattress, camp pillow, duffel, and tote. Here's exactly what fits in an R1S and how to load it for camp.

Publishing teamXI LANGS Editorial

PublishedOct 13, 2026

Page updatedOct 28, 2026

Reading time6 minutes

Rivian R1S Pack: What Fits and How to Load It

Quick answer

The Rivian R1S Pack is worth it if you want one purchase that covers your whole sleep setup and stores in a single duffel. It bundles the foamy-r1s-3748348a3d981ed0467f1306-1913171">Foamy for R1S, a Rivian Camp Pillow, a Foamy Duffel 120L, and a tote at $494.36 versus a $727.00 comparison price. Buy it if you sleep in or behind an R1S; skip it if you drive a different vehicle or already own a Foamy.

What the R1S Pack actually contains

The bundle is four items: one Foamy for R1S mattress, one Rivian Camp Pillow, one Foamy Duffel 120L, and one tote. The mattress is the piece designed specifically around the R1S, and the duffel was built to carry and store that mattress plus a Rivian Camp Pillow. The tote handles the loose items — layers, a headlamp, a water bottle — so you are not digging through the mattress bag at camp.

The bundle price is $494.36 against a $727.00 comparison price, a $108 stated bundle savings. The catalog notes the bundle is excluded from promotion, so do not count on stacking a seasonal discount on top of it.

How the pack loads into an R1S

Load order matters more than total volume in an R1S. Put the Foamy Duffel flat against the seatbacks first, because it is the largest single item and the one you will not need until you stop. Stack chairs, a stove, and a cooler in front of it. The tote rides on top or in a seatback pocket so it stays reachable while you drive.

Keep the pillow out of the duffel on travel days. Shredded memory foam compresses well but you want it accessible for a rest stop or a passenger seat nap, and it takes almost no space loose. If you are sleeping inside the R1S rather than in a tent, unroll the Foamy first and build everything else around it — repacking a full cargo area to reach a mattress at the bottom is the mistake that ruins the first night.

Duffel flat against the seatbacks, heavy gear in front of it.
Tote on top or in a seatback pocket for access while driving.
Pillow loose, not buried, on travel days.
If sleeping inside, unroll the mattress before loading anything else.

Where the R1S Pack stops making sense

This is a vehicle-specific bundle, and that cuts both ways. The Foamy for R1S was designed with the Rivian R1S in mind, so if you drive an R1T, a different SUV, or a van, the fit advantage disappears even though the mattress may still work. If you already own a Foamy, buying the bundle means paying again for a mattress you have — price the pillow, duffel, and tote separately instead.

The other honest limitation is that HEST does not publish packed dimensions for the Foamy for R1S in the catalog facts supplied here. If you carry four passengers plus cargo on every trip, measure your own cargo area with the third row up before committing. That is a decision you have to make with a tape measure, not a product page.

Adding a dog or a second sleeper

Two additions come up most often with R1S owners. The HEST Dog Bed for Rivian is designed to fit in all Rivian vehicles and uses the same premium memory foam as the Foamy for R1S and R2, and it rolls up for portability. If your dog rides with you, it takes floor space you should account for when you plan the load.

For a second human sleeper, the Rivian x HEST Camp Pillow is the piece to duplicate. It uses shredded memory foam and is built to give home-pillow comfort in a compact, portable form. It comes in multiple sizes, so match the size to the sleeper rather than buying two of the same.

Decision rules for buying the R1S Pack

You drive an R1S and own no HEST mattress: The bundle is the straightforward buy. You get the vehicle-specific Foamy, a pillow, and storage that was built to hold both, at a lower price than the pieces separately. Buy the bundle.
You already own a Foamy: You would be paying a second time for the mattress. Price the Rivian Camp Pillow, the duffel, and the tote on their own and compare before checkout. Buy the pieces, not the pack.
You drive an R1T, another SUV, or a van: The Foamy for R1S was designed with the R1S in mind, so the fit advantage that justifies the bundle does not apply to your vehicle. Choose a mattress sized for your vehicle instead.
You sleep inside the R1S, not in a tent: Plan your load around the unrolled mattress. Unroll it first, then pack around it, and keep the pillow loose for the drive. Mattress first, gear second.
You are unsure it will fit with the third row up: The catalog facts supplied here do not include packed dimensions for the Foamy for R1S, so measure your cargo area before you order. Measure, then buy.

Products in this bundle

Rivian R1S Pack: Bundle includes one Foamy for R1S, one Rivian Camp Pillow, one Foamy Duffel 120L, and one tote, at $494.36 versus a $727.00 comparison price. One purchase covers mattress, pillow, and storage, and the stated $108 bundle savings only holds if you actually need all four items.
Rivian x HEST Camp Pillow: Shredded memory foam camp pillow built for compact, portable home-pillow comfort, available in multiple sizes. Buy the size that matches the sleeper; a second pillow is the cheapest way to make the setup work for two people.
HEST Dog Bed For Rivian: Dog bed designed to fit in all Rivian vehicles, built with the same premium memory foam as the Foamy for R1S and R2, and rolls up for portability. If your dog travels with you, budget floor space for it in your load plan rather than discovering the problem at camp.