INSTA 360 YJ91391 Air Lens Guards X4

( Brand: Insta 360 ), ( Manufacturer Part Number: YJ91391 ), ( Part Type: Air Guard ), ( Filter Shape: Square ), ( Filter Color: Clear ), ( Item Length: 36 Mm ), ( Filter Effects: Lens Protection ), ( To Fit: Insta360 X4 ), ( California Prop 65 Warning: No ), ( Unit Type: Piece ), ( Item Height: 13 Mm ), ( Mount Fitting: Snap-on ), ( Filter Size: 36x36mm ), ( Item Weight: 0.02 Kg ), ( Country Of Origin: China )

Review INSTA 360 New X4 Air Lens Guards

The **Insta360 YJ91391 X4 Air Lens Guards** are a meticulously engineered accessory designed to elevate the protection and performance of your Insta360 X4 Air action camera, ensuring both durability and clarity in even the most demanding environments. Crafted from high-grade, impact-resistant polycarbonate, these precision-molded lens guards are built to shield the camera s dual lenses from scratches, dust, and minor impacts, whether you're shredding down a mountain trail, diving into crystal-clear waters, or capturing high-speed action in extreme weather conditions. The guards feature a seamless, aerodynamic design that snaps securely onto the camera s lens assembly with a satisfying click, providing a snug, vibration-dampening fit that minimizes unwanted movement during dynamic filming. Their transparent, anti-fog coating ensures unobstructed visibility and optimal lens performance, even in humid or cold conditions, while the reinforced edges distribute pressure evenly to prevent warping or deformation over time. Ideal for adventurers, athletes, and content creators who demand reliability without compromising image quality, these guards are a must-have for anyone pushing the boundaries of their Insta360 X4 Air s capabilities. Whether you're filming a thrilling snowboarding run, a deep-sea exploration, or a fast-paced skateboarding trick, the YJ91391 X4 Air Lens Guards stand as a silent guardian, preserving the integrity of your footage while allowing you to focus on creating unforgettable moments.

**Pros and Cons of buying a Insta360 YJ91391 X4 Air Lens Guards**

The Insta360 YJ91391 lens guards are designed specifically for the X4 Air action camera, offering protection for the lenses during high-impact activities. Below is a detailed breakdown of their advantages and disadvantages.

### **Pros**

1. **Enhanced Lens Protection** The primary purpose of lens guards is to shield the camera s lenses from scratches, dust, and minor impacts. The YJ91391 guards are designed to fit snugly over the X4 Air s lenses, reducing the risk of damage during outdoor adventures like biking, skiing, or surfing.

2. **Durability** These guards appear to be made from a sturdy, impact-resistant material, likely polycarbonate or a similar tough plastic. This helps absorb minor shocks that could otherwise harm the camera s optics.

3. **Easy Installation and Removal** The design seems to allow for quick attachment and detachment without tools, making them convenient for users who frequently switch between different shooting conditions or need to clean the lenses.

4. **Compatibility** Since they are specifically made for the Insta360 X4 Air, they ensure a proper fit, reducing the risk of misalignment or improper coverage compared to generic lens guards.

5. **Cost-Effective Protection** Compared to the cost of replacing a damaged lens on an action camera, these guards provide a low-cost solution for added protection, especially for users who frequently use their cameras in rugged environments.

6. **Clear Vision** The guards are designed to maintain optical clarity, ensuring that the camera s image quality remains unaffected while providing protection.

### **Cons**

1. **Limited Protection Against Severe Impact** While lens guards help with minor scratches and dust, they are not designed to protect against extreme impacts, such as a direct fall onto a hard surface or a collision with a sharp object. In such cases, the camera itself or its housing may still suffer damage.

2. **Potential for Fogging** If used in cold or humid conditions, the guards could trap moisture between the lens and the guard, leading to fogging and reduced visibility. This may require additional anti-fog treatments or careful handling.

3. **Durability Concerns Over Time** Repeated exposure to UV rays, saltwater, or abrasive surfaces could degrade the material of the guards over time, potentially leading to cracks or reduced effectiveness.

4. **Not a Substitute for a Full Housing** Lens guards are not a replacement for a full protective housing (like the Insta360 X4 Air s waterproof case). If you plan to use the camera underwater or in extreme conditions, a proper housing is still necessary.

5. **Potential for Misalignment** If not installed correctly, the guards could shift during use, leading to uneven coverage or gaps where debris could enter. This requires careful handling during installation.

6. **Limited Availability of Spare Parts** If the guards become damaged, finding official replacements may be difficult, especially if the product is no longer widely sold or supported by Insta360.

### **Conclusion**

The Insta360 YJ91391 lens guards are a practical addition for users of the X4 Air who prioritize lens protection during outdoor activities. They offer a simple, low-cost way to reduce the risk of scratches and minor damage, making them ideal for casual adventurers or those who frequently use their cameras in dusty or rugged environments. However, they are not a substitute for a full protective housing and may have limitations in extreme conditions.

For users who already have a robust housing (like the X4 Air s waterproof case) and primarily worry about lens scratches, these guards provide a worthwhile upgrade. Those who engage in high-impact sports or extreme conditions may still need additional protection beyond just lens guards.

### **Recommendation**

If you own an Insta360 X4 Air and frequently use it in environments where lens protection is a concern (e.g., biking, hiking, or urban exploration), the YJ91391 lens guards are a reasonable purchase. They are affordable, easy to use, and can extend the lifespan of your camera s lenses.

However, if you plan to use the camera in water or extreme conditions, ensure you also have the appropriate housing. Additionally, consider pairing these guards with a lens cleaning kit to maintain optimal clarity.

For most users, the benefits of added lens protection outweigh the minor drawbacks, making these guards a practical accessory for the X4 Air.

Details:

These lens guards offer protection by snap-on mounting and weigh only 0.02 kg per piece. With filter dimensions of 36x36mm and a unit quantity 2, these lens guards are practical lightweight accessory to ensure the longevity quality your camera. The Brand New Insta 360 X4 Air Lens Guards are square-shaped clear filters designed specifically for the Insta360 air camera. Made by the Insta 360 brand, these lens guards are a convenient solution for your x4 air.

part #: yj91391 price

• $20.00

specifications filtecam:

• brand: Insta 360
• mpn: Yj91391
• part type: Air Guard
• filter shape: Square
• filter color: Clear
• item length: 36 Mm
• filter effects: Lens Protection
• to fit: Insta360 X4
• california prop 65 warning: No
• unit type: Piece
• item height: 13 Mm
• mount fitting: Snap-on
• filter size: 36x36mm
• item weight: 0.02 Kg
• country of origin: China

offer filtecam:

• availability: In Stock
• quantity: 1
• started: April 27, 2026
• sold: 0
• best offers: True
• options: Ship-to-home

shipping filtecam:

• cost: $6.07
• carrier: USPS
• type: Calculated
• transit: 4-11 Days
• class: Standard
• service: USPS Ground Advantage

returns filtecam:

• policy: No Returns

general filtecam:

• Cameras Photo > Lenses Filters > Filters
• condition: New

payments filtecam:

• credit card: Mastercard
• wallet: Apple-pay
• other

seller filtecam:

• city: Lakewood, New Jersey
• # reviews: 4
• rating: 100.0%

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