Difference between PU & SRF?

Bro both PU and SRF are better materials than other materials for punching bag, PU and SRF that doesn't cause lot's of difference in punching bag quality. You can choose bag according to your preference, in my opinion SRF material is value for money.

Can i put sand inside to make it heavier?

yes , but the condition is it should be unfilled.

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Amazon Brand - Symactive High Performance Heavy Duty 4 feet Filled Punching Bag with Rust Proof Stainless Steel Hanging Chain | SRF Material | for Boxing, MMA and Muay Thai | Black

Product ID: 534668118

Details

Brand
Amazon Brand -
Colour
Black
Item Weight
19000 Grams
Size
4 ft
Sport
Boxing

🔗Rust-proof stainless steel chain

🥊4 ft heavy-duty size

🛡️Double-stitched durability

₨289308

Duties & taxes included

In stock

Sold byAmazon Sri LankaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🥊 Elevate your fight game with the ultimate heavy bag experience!

EFFORTLESS SETUP - Includes a rust-proof stainless steel hanging chain and heavy-duty d-shackles for quick, secure installation.
PRO LEVEL DURABILITY - Crafted with premium SRF material and double-stitched seams to withstand your toughest training sessions.
READY OUT OF THE BOX - Comes as a complete kit with a 4-foot filled bag and swivel chain—train immediately, no delays.
TRUSTED BY CHAMPIONS - Ranked #1 in Boxing Heavy Bags and backed by 865+ reviews with a solid 4.1-star rating.
OPTIMIZED IMPACT FEEDBACK - Balanced sand and filler mix delivers the perfect resistance for boxing, MMA, and Muay Thai strikes.

The Amazon Brand - Symactive 4-foot Heavy Duty Punching Bag is engineered with durable SRF synthetic rubber fiber and a balanced sand-filler core for optimal impact resistance. Featuring rust-proof stainless steel hanging hardware and reinforced double-stitched seams, this bag is built to endure intense boxing, MMA, and Muay Thai training. Ready to use right out of the box, it’s the top-ranked choice for serious athletes seeking longevity and performance.

Specifications

ASIN	B0BZ8BMXX9
Age Range Description	Adult
Best Sellers Rank	#314 in Sports, Fitness & Outdoors ( See Top 100 in Sports, Fitness & Outdoors ) #1 in Boxing Heavy Bags
Brand Name	Amazon Brand - Symactive
Colour	Black
Country Of Origin	India
Customer Reviews	4.1 4.1 out of 5 stars (865)
Importer Contact Information	Kushal Rubber Industries, BASTI BAWA KHEL, KAPURTHALA ROAD, JALANDHAR-144021, 97802 80717
Item Dimensions W x H	30W x 118H Centimeters
Item Type Name	PUNCHING BAG
Item Weight	19000 Grams
Manufacturer	Kushal Rubber Industries, Kushal Rubber Industries, BASTI BAWA KHEL, KAPURTHALA ROAD, JALANDHAR-144021, 97802 80717
Manufacturer Contact Information	Kushal Rubber Industries, BASTI BAWA KHEL, KAPURTHALA ROAD, JALANDHAR-144021, 97802 80717
Number of Items	1
Outer Material Type	Synthetic Rubber Fiber (SRF)
Packer Contact Information	Kushal Rubber Industries, BASTI BAWA KHEL, KAPURTHALA ROAD, JALANDHAR-144021, 97802 80717
Size	4 ft
Sport Type	Boxing
Unit Count	1.0 Count
Whats In The Box1 - Whats In The Box3	1 X 4 Feet Filled Punching Bag, 1 X Hanging Chain

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