Buying guide · 10 min read · Updated October 2, 2026

2 Best Olefin RV Cover in 2026: A Practical RV Guide

Two ADCO Olefin HD RV covers compared for Class A motorhomes and small travel trailers, with fit, fabric and installation guidance for buyers.

By Bowen HigginsRV Editor at RV Gear Lab2 products comparedSpec-sheet researched

At a glance

Our top picks

At a glance · 2 picks

01
Best Overall ADCO 36824 Designer Series Olefin HD Class A Motorhome Cover 28' 1"↓ See why we picked it
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02
Best for Small Trailers ADCO 36838 Designer Series Olefin HD Travel Trailer Cover Up to 15'↓ See why we picked it
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Olefin is a polypropylene based cover fabric that reflects sunlight and breathes, which is why it is a popular choice for RVs stored outdoors. Only two covers in our shortlist are actually built from Olefin HD, so this guide stays strict about fabric and compares them by RV type, size range and construction.

RV Gear Lab field notes

The Rig Fit Check

Start with the job: ADCO 36824 Designer Series Olefin HD Class A Motorhome Cover 28' 1" leads this shortlist for Class A owners storing outdoors. Use that fit as a reference point, then compare the alternatives against your own space and workload.
Specs that separate the picks: The first details to compare are Olefin HD top panel, Olefin HD trailer cover. Confirm the exact model and included components before ordering.
Trade-off to plan for: Only fits Class A from 28 to 31 feet

Before you buy

What Matters Before You Choose an Olefin RV Cover

Key buying criteria so you get the right fit the first time.

01
Confirm the fabric is Olefin
Olefin is a polypropylene family fabric that breathes while shedding water, and covers made from it feel different from plain non woven polypropylene. Many listings use Olefin as a keyword without naming it in the specs. Look for Olefin or Olefin HD in the title or material bullet.
02
Measure true RV length
Cover sizes are matched to overall length, and the ADCO Class A listing says bumpers and the spare tire are included. Leaving out a rear ladder, spare or front hitch is a common reason a cover comes up short. Measure bumper to bumper and pick the range that contains that number.
03
Match the RV type
Class A, Class C and travel trailer covers are cut with different roof and front profiles. A trailer cover will not fit a motorhome even at the same length. Check that the product name states your exact RV type.
04
Breathability and condensation
A cover that traps moisture can cause mildew under it, so breathable fabric matters as much as water resistance. Olefin is chosen for its balance of shedding rain and letting vapor out. Look for the words breathable and water resistant rather than waterproof.
05
Strap and installation system
A big cover is hard to pull on alone, so toss weights, buckles and undercarriage straps decide whether it stays on in wind. The ADCO Class A model lists a weighted buckle toss and slip seam strapping. Check the listing for tie downs that run under the RV.

Our standards

Why You Can Trust RV Gear Lab

At RV Gear Lab, we compare products based on rig fit and power or hookup compatibility, verified specifications, usability, setup requirements, weight, durability, and real-world trade-offs. We do not rank products purely on marketing claims or commission rates.

We have not personally tested every product listed. Where hands-on testing is not available, recommendations are based on verified manufacturer specifications, product documentation, use-case fit, and comparative research.

How we review RV gear →

Detailed reviews

The 2 best olefin rv cover, explained

Best Overall · 1 of 2

ADCO 36824 Designer Series Olefin HD Class A Motorhome Cover 28' 1"

Olefin HD top panel
Class A, 28'1" to 31'
Slip-seam strap system

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Best for: Class A owners storing outdoors

Our take

Against the ADCO trailer cover, it adds slip seam strapping, a weighted buckle toss for installation and reinforced top and bottom side panels.

Why it made the shortlist

The ADCO 36824 Designer Series is an Olefin HD cover for Class A motorhomes from 28 feet 1 inch to 31 feet, with measurement that includes bumpers and the spare tire. The top panel is Olefin HD that reflects sunlight, while the sides and ladder cap are polypropylene for wear resistance.

It suits Class A owners who want a breathable, water resistant cover that accommodates rooftop accessories.

What works

Olefin top reflects sunlight and breathes
Reinforced panels at top and bottom of sides
Weighted toss makes installation easier solo

Watch out for

Only fits Class A from 28 to 31 feet

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Best for Small Trailers · 2 of 2

ADCO 36838 Designer Series Olefin HD Travel Trailer Cover Up to 15'

Olefin HD trailer cover
Fits trailers up to 15'
Gray and white finish

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Best for: Compact travel trailers up to 15 feet

Our take

It suits owners of small towables who want Olefin breathability in a gray and white finish.

Why it made the shortlist

The ADCO 36838 Designer Series is an Olefin HD cover sized for travel trailers up to 15 feet.

What works

Olefin HD fabric on a compact trailer cover
Sized for small towables up to 15 feet

Watch out for

Listing gives very few construction details
Too short for mid size travel trailers

The catch: It brings the same Olefin HD material family as the Class A model to a much smaller footprint.

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Methodology

How We Built This Shortlist

Each pick was assessed across 4 criteria weighted for real-world use.

Fabric

We checked that the listing names Olefin, since many polypropylene covers are sold without saying so.

Fit range

We compared the stated length ranges and whether bumpers and spares count in the measurement.

Installation

We looked at strap, buckle and toss systems that help one person fit the cover.

Detail depth

We weighed how much construction detail each listing gives a buyer.

Decision guide

Match an Olefin RV Cover to Your RV

By RV Type

Your situation	Recommended pick	Why
Class A motorhome, 28'1" to 31'	ADCO Class A Olefin	The only Class A Olefin HD cover here.
Small trailer under 15 feet	ADCO Trailer Olefin	Sized for compact towables.
Owner wants roof accessory room	ADCO Class A Olefin	Design accommodates rooftop accessories.

By Budget

Budget	Recommended pick
$310 to $320	ADCO Trailer Olefin
$360 to $370	ADCO Class A Olefin

Olefin vs Polypropylene

Olefin HD

Reflects sunlight and breathes on the top panel. ADCO Class A Olefin and ADCO Trailer Olefin both use it.

Polypropylene

Used on the sides and ladder cap for wear resistance, as in the ADCO Class A Olefin side walls.

Choose the ADCO Class A Olefin for a motorhome, since it combines both materials.

By Budget

Budget	Recommended pick
Lower spend on a small RV	ADCO Trailer Olefin
Full coverage on a Class A	ADCO Class A Olefin

For Outdoor Storage Specifically

Look for

A breathable fabric with a sun reflecting top and a strap system that runs under the RV.

In this comparison

ADCO Class A Olefin lists an Olefin HD top and slip seam strapping, which is the stronger match for exposed storage.

When to Spend More

Spend more if

Spend more on ADCO Class A Olefin if you own a motorhome in the 28 to 31 foot range and store outdoors year round.

Save if

Save with ADCO Trailer Olefin if you own a compact trailer under 15 feet and want Olefin without a large cover.

FAQ

Before You Bring One Home

Does an Olefin cover work for a travel trailer over 15 feet?

The ADCO trailer cover shown here is sized up to 15 feet, so a longer trailer needs a different cover. Always match the cover length range to your overall measured length.

What mistake do buyers make with cover sizing?

They measure the box and ignore bumpers, ladders and spare tires. The ADCO Class A listing counts bumpers and the spare in its range, so measure the same way.

Is a Class A Olefin cover worth it over a cheaper cover?

Olefin gives a sun reflecting, breathable top, which matters for RVs that sit outside for months. If the RV is stored indoors or only for a few weeks, a simpler cover may be enough.

How do I install a large RV cover alone?

Use the weighted toss to throw the straps over, then work from one side and cinch the undercarriage straps. The ADCO Class A Olefin is designed around this toss and buckle method.

Bottom line

The short version

Browse more olefin rv cover on Amazon →

About the author

Bowen Higgins

RV Editor at RV Gear Lab

Bowen covers RV power, water systems, towing and leveling, upkeep and interior comfort, with a focus on matching gear to the rig, the hookups and the way you actually travel.

2 Best Olefin RV Cover in 2026: A Practical RV Guide

Our top picks

The Rig Fit Check

What Matters Before You Choose an Olefin RV Cover

Confirm the fabric is Olefin

Measure true RV length

Match the RV type

Breathability and condensation

Strap and installation system

Why You Can Trust RV Gear Lab

The 2 best olefin rv cover, explained

How We Built This Shortlist

Fabric

Fit range

Installation

Detail depth

Match an Olefin RV Cover to Your RV

By RV Type

By Budget

Olefin vs Polypropylene

By Budget

For Outdoor Storage Specifically

When to Spend More

Before You Bring One Home

Does an Olefin cover work for a travel trailer over 15 feet?

What mistake do buyers make with cover sizing?

Is a Class A Olefin cover worth it over a cheaper cover?

How do I install a large RV cover alone?

The short version

Bowen Higgins

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