SikaiCase Silicone Cup Sleeve with Lanyard for 2.8–3.8 in Cups

Carry Your Cup with More Comfort

The SikaiCase Silicone Cup Sleeve with Lanyard adds a soft, non-slip grip and convenient hands-free carrying option to compatible tumblers, mugs and bottles. Its flexible silicone body wraps around straight-sided drinkware measuring approximately 2.8–3.8 inches (7.1–9.7 cm) in outside diameter.

Designed for everyday use at home, school, the office or while traveling, the sleeve also includes decorative holes for compatible charms and small accessories.

Why You’ll Like It

• Soft silicone grip: Adds a comfortable, non-slip holding surface to smooth cups and bottles.
• Hands-free lanyard: Carry compatible drinkware over the shoulder or by hand when commuting, walking or traveling.
• Flexible fit: Designed for straight-sided cups and bottles with an outside diameter of approximately 2.8–3.8 inches.
• Protective coverage: Helps reduce everyday scuffs and direct contact around the covered area.
• Personalizable design: Decorative holes can hold compatible shoe-style charms and small accessories.
• Reusable and washable: Rinse with water and allow it to air-dry before the next use.

Compatibility

Recommended cup diameter: 2.8–3.8 in (approximately 7.1–9.7 cm).

Compatible with many straight-sided 20 oz tumblers, glass bottles, kids’ bottles, coffee cups and travel mugs within the stated diameter range. It may fit selected YETI-style tumblers and similar drinkware, but fit depends on the cup’s actual shape and outside diameter—not capacity alone.

Before You Buy

• Measure the outside diameter of your cup where the sleeve will sit.
• Do not rely only on the listed ounce capacity; two cups with the same capacity may have different shapes.
• Not recommended for strongly tapered, unusually curved or handled cups that prevent the sleeve from sitting securely.
• The sleeve helps with grip and light surface protection but is not drop-proof or impact-proof.
• Check that the sleeve and lanyard are installed securely before carrying a filled cup.

How to Install

1. Measure and confirm that the intended sleeve position is within the 2.8–3.8 in diameter range.
2. Lightly wet the cup and the inside of the silicone sleeve if needed.
3. Slide the sleeve onto the cup and position it evenly.
4. Attach and secure the lanyard as shown in the product images.
5. Test the fit over a soft surface before carrying the cup.

Care Instructions

Remove the sleeve and lanyard from the cup. Rinse with water or clean gently using mild soap and a soft cloth. Air-dry completely before reinstalling. Avoid sharp tools and abrasive cleaners.

Frequently Asked Questions

Will it fit every YETI 20 oz tumbler?

No. Compatibility depends on the exact model, shape and outside diameter. Please measure the cup before ordering.

What cup size does it fit?

It is designed for compatible cups and bottles measuring approximately 2.8–3.8 inches in outside diameter where the sleeve sits.

Can I use it on a kids’ bottle or glass bottle?

Yes, if the bottle has a suitable straight-sided shape and falls within the stated diameter range.

Does the sleeve protect against drops?

It provides grip and light surface protection around the covered area, but it does not make the cup drop-proof.

Can the lanyard carry a full bottle?

Always verify the fit and attachment before use. Carrying suitability depends on the bottle’s weight, shape and how securely the sleeve is installed.

Is it easy to clean?

Yes. Remove it from the cup, rinse or wash gently with mild soap, and air-dry completely.

Can I add decorative charms?

Yes. The sleeve includes holes for compatible shoe-style charms and similar small decorations. Charms are subject to the selected set shown on the product page.

Are the cup and accessories included?

Only the sleeve and included lanyard/accessories for the selected variant are included. The drinkware shown in images is for demonstration unless otherwise stated.

Is this an official YETI accessory?

No. This is an independent SikaiCase accessory and is not affiliated with, endorsed by or sponsored by YETI or any other third-party drinkware brand.