Gear article
Ernie Ball 4050 Polypro Strap Forest Green
The Ernie Ball 4050 Polypro Strap is a durable, two-inch wide guitar strap constructed from polypropylene webbing in a Forest Green finish. Designed for reliability and longevity, it features high-strength black leather ends and a wide adjustment range to accommodate various playing styles.

Overview
The Ernie Ball 4050 Polypro Strap is a standard-setting accessory in the music industry, known for its combination of affordability and resilience. The strap is built around a 2-inch wide polypropylene webbing, a material selected for its high tensile strength and resistance to stretching. This particular model is finished in 'Forest Green', providing a deep, natural aesthetic suitable for various instrument finishes.
The design is completed with robust black leather ends, which feature a gold-stamped Ernie Ball logo, adding a premium visual element to a functional tool. The hardware consists of a tough Delrin buckle and connector, designed to facilitate smooth length adjustments while maintaining structural integrity under the weight of an instrument.
Construction and Features
The primary material, polypropylene, is chosen for its specific physical properties. Unlike natural fibres, this webbing will not bleed colour onto clothing or stretch out over time, ensuring the instrument remains at the user's preferred height. The leather ends are machine-stitched for durability, intended to hold securely onto standard strap buttons.
Adjustment is handled by a black Delrin slide, allowing the strap to extend from a minimum length of 41 inches to a maximum of 72 inches. This extensive range makes it one of the more versatile straps on the market, accommodating everything from high-slung jazz guitarists to bassists who prefer a lower playing position.

Target Audience
This strap is positioned as a universal solution for guitarists and bassists. Its rugged construction makes it suitable for everyday practice as well as live performance environments. Because of its generous length adjustment, it is an appropriate choice for players of all physical sizes and those using larger instruments that require more clearance.
While it is primarily a functional item, the Forest Green colour offers a specific stylistic choice for players looking for a darker, more understated alternative to traditional black or bright primary colours.
Comparison to Alternatives
In the broader market of instrument accessories, the Ernie Ball Polypro sits alongside various specialized options:
- Compared to Saxophone Straps: Unlike the Neotech Soft Sax Strap or the Protec NC310M, which use padding and hooks for woodwind instruments, the Ernie Ball 4050 is a flat webbing design intended for heavy stringed instruments.
- Compared to Banjo Straps: While the Neotech Super Banjo Strap often uses specialized clips, the Ernie Ball uses standard leather hole-ends meant for guitar buttons.
- Maintenance Accessories: While products like Fender Strap Blocks can be used in conjunction with the 4050 to increase security, the 4050 provides the primary support structure that small clips or blocks cannot.
- Capos and Hardware: Unlike hardware such as the Flight Aluminium Ukulele Capo or K&M Classical Guitar Capo, which affect the instrument's pitch, the strap is strictly a physical support accessory.
Related gear
£22.00 ($28)Neotech
Neotech Soft Sax Strap Regular Swivel Hook Red
£29.00 ($37)BG
BG Oboe Zen Strap Nylon Non-Elastic
£21.00 ($27)Protec
Protec NC310M Saxophone Strap 22"
£33.90 ($43)Neotech
Neotech Super Banjo Strap Black
£4.99 ($6)Fender
Fender Strap Blocks (4 Pack)
£6.49 ($8)Flight
Flight Aluminium Ukulele Capo Silver
£14.69 ($19)K&M
K&M 30910 Classical Guitar Capo Chrome
Frequently asked questions
- What is the width of the Ernie Ball 4050 Polypro Strap?
- The strap is 2 inches wide, providing a standard balance between comfort and mobility for the player.
- What is the maximum length this strap can reach?
- The strap is adjustable up to a maximum length of 72 inches, making it suitable for tall players or those who wear their instruments low.
- What is the minimum length of the strap?
- The strap can be adjusted down to a minimum length of 41 inches for players who prefer their instrument positioned higher on the body.
- What material is the webbing made from?
- The webbing is made from polypropylene, which is chosen for its durability and resistance to stretching.
- Will the Forest Green colour bleed into my clothes?
- No, the polypropylene material is designed to have lasting colour that will not bleed or transfer onto the user's clothing.
- What material are the strap ends made of?
- The ends of the strap are constructed from high-quality black leather, which provides a secure connection to the instrument.
- Does the strap feature any branding?
- Yes, the leather ends feature a gold-stamped Ernie Ball logo for a premium appearance.
- What kind of buckle does this strap use?
- The strap uses a tough Delrin buckle and connector, which are designed for strength and smooth adjustment.
- Is the polypropylene material prone to stretching?
- No, the polypropylene webbing is specifically designed not to stretch, ensuring consistent support for the instrument.
- Is this strap suitable for bass guitars?
- Yes, the rugged construction and adjustable length make it a practical choice for both standard electric guitars and heavier bass guitars.
- What is the typical price range for this model?
- The Ernie Ball 4050 Polypro Strap typically retails for approximately £8.00.
- How does the Forest Green finish look?
- The Forest Green finish is described as a bold, dark green that provides a stylish and modern aesthetic for the instrument.
