100 Gallon Outdoor Storage Box Waterproof Deck Box - Lockable Bench

In this review of the 100 Gallon Outdoor Storage Box by GULAIMOAO, the bottom line is simple: it is best for homeowners who need a weatherproof, roomy storage solution that can also double as seating. The single biggest reason to buy is its combination of a true 100 gallon capacity and all-weather resin construction, which keeps cushions, garden tools and pool accessories dry through rain and sun. Assembly is straightforward and the bench is sturdy enough for two people, making it a practical, multipurpose piece for patios and decks.

Key Features

• All-Weather Resin: Weather-resistant resin construction keeps contents waterproof, rust-proof, UV-resistant and fade-proof for long-term outdoor use.
• Large Capacity: The 100 gallon interior gives ample space to store patio cushions, gardening tools, pool toys and other seasonal items without crowding.
• Lockable Lid: A lockable lid design provides extra security for stored items and helps keep contents protected from the elements.
• Dual Side Handles: Built-in side handles make the box easy to move when empty or lightly loaded for repositioning around a patio or deck.
• Bench Function: The top doubles as a 2-person bench seat with load capacity rated up to 600 lbs, adding useful seating without extra furniture.
• Quick Tool-Free Assembly: The design allows assembly in roughly 15 minutes without special tools, so setup is fast and convenient.

Who It's For

The storage box is ideal for homeowners and renters with outdoor living spaces who want a single item that provides secure storage and extra seating. It works well for people who store cushions, pool accessories, garden tools, toys or seasonal gear and prefer a weatherproof, low-maintenance material over wood that needs staining or metal that can rust.

It is less suited for those who need a permanently anchored storage system with a built-in lock included, or for people who require exact internal shelving or compartments; this model is a simple large-volume bin with a flat interior. Also, buyers who need very frequent, heavy relocation should note the handles help but the unit is still large when full.

Pros & Cons

Pros

• Spacious 100 gallon capacity handles bulky items like cushions and toys with room to spare.
• Durable resin resists water, rust and UV damage so the box stays serviceable outdoors.
• Top functions as a sturdy 2-person bench seat, adding versatile patio seating.
• Fast, tool-free assembly and dual handles make setup and moving straightforward.

Cons

• Lock hardware is not included, so buyers must supply their own padlock for full security.
• Without internal dividers, small items may shift; additional bins or organizers may be needed.

Specifications

Capacity	100 gallons
External Dimensions	47.8 in L x 21.3 in W x 24.4 in H
Material	Weather-resistant resin with rattan-like texture
Load Capacity (top)	600 lbs
Security	Lockable lid (lock not included)
Assembly	Tool-free, approx. 15 minutes

Our Verdict

The 100 Gallon Outdoor Storage Box is a practical, good-value solution for outdoor storage and casual seating. Its waterproof, UV-resistant resin and generous interior make it especially useful for storing cushions and pool gear, while the bench top and portability add functional value. Choose this if you want low-maintenance outdoor storage that doubles as seating and are prepared to supply a padlock for full security.

Frequently Asked Questions

Is the box waterproof?
Yes, the resin construction is waterproof and designed to protect stored items from rain and moisture.

Can two adults sit on it?
Yes, the top is rated to support up to 600 lbs and is reported by users as sturdy enough for two adults.

Does it include a lock?
No, the lock is not included; the lid accepts a padlock so buyers can add their preferred lock for security.