Description
Circular Sandbags — Stackable Rounded Weight Bags
The gold standard ballast bag for single post applications.
Circular Sandbags are designed to wrap securely around posts, poles, or stand bases, providing 25 lb of weight (50 lbs with steel shot fill) that can be stacked to meet any stability requirement. Whether used to secure patio umbrellas, stabilize microphone stands, add weight to signage, or keep outdoor heaters upright in heavy winds, these rounded weight bags offer unmatched flexibility and convenience.
Key Features
Round Shape
Stainless Steel Hardware
Stackable
Carry Handle
Zipper Closure
Weather Protection
Learn More
Quality First
Made from heavy-duty Cordura® fabric and sewn with double-stitched seams, each bag is built for years of daily use—indoors or outdoors. A sturdy handle makes them easy to carry, while the compact circular shape allows you to stack multiple bags for higher ballast. Available empty (for local fill) or pre-filled with clean chip sand or steel shot, they’re ready to adapt to nearly any application.
Product Features
- Capacity: Holds up to 25 lb of sand or 50 lb of steel shot
- Shape & Fit: Wraps around poles and bases up to 4" diameter
- Stackable: Easily combine multiple bags to achieve greater stability
- Durability: Cordura® fabric for maximum puncture resistance
- Carry Handle: Built-in handle for convenient transport and positioning
- Options: Sold empty or pre-filled for immediate use
- Outdoor Protection: Optional vinyl UV covers for extended life
- Origin: 100% Made in the USA
- Shipping: Free nationwide delivery
Volume Discounts: (Discounts automatically apply at checkout)
| 4–9 | 10–49 | 50–99 | 100+ |
|---|---|---|---|
| Save $2/Bag | Save $4/Bag | Save $6/Bag | Save $8/Bag |
Best Uses
- Patio & market umbrellas
- Outdoor propane heaters
- Basketball hoops and sports equipment
- Lighting, audio, and microphone stands
- Trade show displays and signage
- Tables, awnings, and temporary event structures
Sandbag Specifications
| Brand / Series | Circular Sandbags |
|---|---|
| Product Type | Pro Grade Weight Bag |
| Key Features | Circular Shape, Locking Clasp, Fits Pipes, Posts & Pole Bases |
| Shipped Weight | Empty, 25 lb, 50 lb |
| Fill Capacity | 25 lb (Sand), 50 lb (Steel Shot) |
| Dimensions | 12" × 12" × 3" | 4" Diameter Center Hole |
| Color Options | Black, Orange, Tan, Green |
| Closure Type | Heavy-Duty #10 Nylon Coil Zipper |
| Packaging / Quantity | Sold Individually |
| Fabric Material | 1000D Cordura® Nylon |
| Fabric Denier | 1000 Denier |
| Fabric Weight | 407 GSM / 12 oz/yd2 |
| Fabric Construction | High-Density Textured Nylon Basket Weave |
| UV Resistance / Outdoor Life | 6000 UVI / 3-Year (with Sun Covers) |
| Abrasion Resistance | Extremely High |
| Tensile Strength | 500 lb Warp / 300 lb Fill Minimum |
| Water Flow Rate | Non-Permeable |
| Country of Origin | Made in USA |
Why Choose Circular Sandbags?
- A clean, professional-looking alternative to bulky bricks or cinderblocks
- Stackable, rounded design offers more stability in less space
- Weather-resistant materials ensure long-term reliability outdoors
- Easy to carry, reposition, and store between uses
- Trusted by homeowners, musicians, event producers, and contractors alike
- Available pre-filled and ready to use
Customer Proven
Hundreds of verified reviews highlight their strength, clean look, and ease of use. From music stages to windy backyards, these bags have become the go-to choice when simple, dependable weight ballast is needed.
Best-Fit Applications
Umbrella Base Weights
Keep patio umbrellas steadier with up to 50 lb of ballast per bag. The circular design wraps around the umbrella pole and stacks neatly on the base, making it easy to add weight without taking up more patio space.
Sign Stand Base Weights
Keep directional signs and portable displays upright and visible. Designed for single-post sign stands, these weights wrap around posts up to 4 inches in diameter, adding compact ballast at the base for events, venues, storefronts, and outdoor walkways.
Light Stand & Tripod Weights
Help prevent top-heavy lights and tripods from tipping during a shoot. The wraparound design keeps ballast close to the stand’s center, while the sturdy clasp holds the bag securely in place when you reposition your equipment.
Patio Furniture Weights
Add discreet ballast to swivel chairs, pedestal tables, and other patio furniture. The compact, rounded design fits neatly around center supports, helping keep furniture in place with a clean appearance that looks like part of the original setup.
Flag & Banner Ballast
Give feather flags, promotional banners, and portable flag stands a steadier foundation when the wind picks up. The circular shape fits around the mast and rests over the stand’s feet, adding weight where it helps resist tipping.
Propane Patio Heater Weights
Add stability to freestanding patio heaters by placing a bag around the pole on top of the base. The added ballast helps resist tipping as the propane tank empties and the heater loses weight, keeping your patio setup more secure.
Christmas Tree Stand Weights
Help keep real and artificial Christmas trees upright by adding ballast over the stand’s feet. The circular design wraps around the center pole and tucks beneath a tree skirt, adding discreet stability to lightweight tree bases in homes, storefronts, and holiday displays.
Specifications
Outer Shell
Berry Amendment Compliant
1000D CORDURA® NYLON
| Property | Specification | Test Method |
|---|---|---|
| Material | 1000D Cordura® Nylon | — |
| Fabric Weight | 9.5 oz/yd² (322 g/m²) | ASTM D3776 / D3776M |
| Finish | Durable Water Repellent (DWR) | — |
| Coating | 3/4 oz Urethane | — |
| Weave | Plain | — |
| Fiber Content | 100% Nylon 6,6 | AATCC 20 / AATCC 20A |
| Yarn Size | 1000D Warp / 1000D Fill | ASTM D1907 |
| Yarn Count | 24 × 23 per inch | ASTM D3775 |
| Grab Tensile | 420 lb × 370 lb | ASTM D5034 |
| Tear Strength | 30 lb × 25 lb | ASTM D2261 |
| Abrasion Resistance | Excellent >3,000 cycles | ASTM D3884 |
| Colorfastness to UV | Fair (Grade 2-3) | AATCC TM16.3 |
| Water Flow Rate | <.1 CFM (Water Resistant) | ASTM D737 |
| Flame Retardant | No | ASTM D6413 |
Construction Details
Welded Stainless Steel D-Ring (2")
| Property | Specification | Test Method |
|---|---|---|
| Material | Type 304 Stainless Steel | Manufacturer Specification |
| Surface Finish | Natural Stainless Steel | Visual Inspection |
| Weld Type | MIG Welded | Manufacturer Specification |
| Corrosion Resistance | 48-hour Neutral Salt Spray | ASTM B117 |
| Minimum Breaking Strength | 900 lbf (4.00 kN) | ASTM D5034 / ASTM D6775 / ISO 13934 / ASTM D5035 |
| Average Breaking Strength | 1,268 lbf (5.64 kN) | ASTM D5034 / ASTM D6775 / ISO 13934 / ASTM D5035 |
Snap Hook 1.5" Stainless
| Property | Specification | Test Method |
|---|---|---|
| Component | Swivel Snap Hook | Manufacturer Specification |
| Material | Type 304 Stainless Steel (SS304) | Manufacturer Specification |
| Finish | Natural Stainless Steel (Self Color) | Visual Inspection |
| Overall Width (A) | 1.56 in (39.61 mm) ±0.039 in | Caliper |
| Overall Length (B) | 3.12 in (79.27 mm) ±0.039 in | Caliper |
| Wire Diameter | 4.86 mm (0.191 in) ±0.10 mm | Caliper |
| Spring Thickness | 0.60 ±0.05 mm (0.024 ±0.002 in) | Caliper |
| Weight | 39.5 g (1.26 oz) ±5% | Scale |
| Minimum Tensile Strength | 125 lbf Minimum | ASTM D5034 / ASTM D5035 |
| Average Tensile Strength | 168.6 lbf | ASTM D5034 / ASTM D5035 |
| Corrosion Resistance | 48-hour Salt Spray, No Rust | ASTM B117 |
| Regulatory Compliance | California Proposition 65 Required | Manufacturer Declaration |
Polypropylene Webbing
| Property | Specification | Test Method |
|---|---|---|
| Material | 100% Polypropylene | Manufacturer Specification |
| Width | 1.5 in. ± 1/32 in. | Manufacturer Specification |
| Tensile Strength | 1,200 lb ± 5% | Manufacturer Specification |
| Weight | 0.944 oz/yd / 26.72 g/yd avg. | Manufacturer Specification |
| Thickness | 0.063 in. avg. | Manufacturer Specification |
| Colorfastness — Wet/Dry Crock | Grade 4–5 | AATCC 8 |
| UV Resistance | 200 hr | AATCC 186 / ASTM D1148 |
| Stitching | Lockstitch | Manufacturer Specification |
| Compliance | CA Prop 65 Required | Manufacturer Specification |
#10 NYLON COIL ZIPPER BAG CLOSURE
| Property | Specification | Test Method |
|---|---|---|
| Zipper Type | #10 Continuous Coil Zipper | ASTM D2061 |
| Chain Material | Woven Polyester Tape with Nylon Coil | Manufacturer Specification |
| Tape Width | 38 ± 1 mm | Dimensional Inspection |
| Coil Width | 10.35 ± 0.05 mm | Dimensional Inspection |
| Slider Type | Auto-Lock Metal Slider with Pull | Visual Inspection |
| Slider Material | Zinc Alloy, Black Enamel Finish | Manufacturer Specification |
| Slider Opening | 10.45 ± 0.03 mm | Dimensional Inspection |
| Chain Weight | 35 ± 3 g/yd | Manufacturer Specification |
| Slider Weight | 17.5 ± 0.8 g | Manufacturer Specification |
| Crosswise Strength | 70 lb minimum | ASTM D2061 |
| Corrosion Resistance | 24-Hour Salt Spray - Pass | ASTM B117 |
| Colorfastness to Crocking | Grade 3.5-4 | AATCC 8 |
| Colorfastness to Water | Grade 3.5-4 | AATCC 107 |
| Chemical Compliance | RoHS & REACH Compliant Materials* | Manufacturer Certification |
| Color | Black | Standard |
Fill Options
Chip Rock (#7 Coarse Aggregate)
| Property | Specification | Test Method |
|---|---|---|
| Material | Crushed Stone Aggregate | ASTM C33 |
| Classification | #7 Coarse Aggregate | ASTM C33 |
| Color | Natural Gray / Tan | — |
| Density (Unit Weight) | 101.8 lb/ft³ | ASTM C29 |
| Material Hardness | Quartz Based (Mohs ~7) | Mineral Hardness Scale |
| Bulk Specific Gravity (SSD) | 2.781 | ASTM C127 |
| Bulk Specific Gravity (Dry) | 2.768 | ASTM C127 |
| Apparant Specific Gravity | 2.805 | ASTM C127 |
| Absorption | 0.005 | ASTM C127 |
| Voids in Aggregate | 0.41 | ASTM C29 |
| Fractured Faces (1 Face) | 1.0 | ASTM D5821 |
| Fractured Faces (2 Faces) | 1.0 | ASTM D5821 |
| LA Abrasion Loss (500 Rev) | 0.21 | ASTM C131 |
| Cleanliness Value (CV) | 94.0 | Nevada Test 228 |
| Sieve Size | Percent Passing | — |
| 1" | 1.0 | — |
| 3/4" | 1.0 | — |
| 1/2" | 0.98 | — |
| 3/8" | 0.61 | — |
| #4 | 0.02 | — |
| #8 | 0.01 | — |
| #16 | 0.01 | — |
| #30 | 0.01 | — |
| #50 | 0.01 | — |
| #100 | 0.01 | — |
| #200 | 0.005 | — |
Steel Shot (Optional)
| Property | Specification | Test Method |
|---|---|---|
| Material | Low Carbon Cast Steel Shot | Manufacturer Specification |
| Composition | >96% Iron (Fe) | SDS Chemical Analysis |
| Shape | Near Spherical | Visual Inspection |
| Color | Light Gray / Silver | Visual Inspection |
| Specific Gravity | 7.4 - 7.8 | ASTM E12 |
| Bulk Density | 280 - 300 lb/ft³ | ASTM B527 |
| Moisture Absorption | None | Material Characteristic |
| Water Solubility | Insoluble | Material Characteristic |
| Combustibility | Non-Combustible | SDS |
| Magnetic | Yes | Material Characteristic |
| Non-Hazardous | Yes | SDS |
