As a starting point let us contemplate the NILLKIN Smooth Shockproof Soft Liquid Silicone Rubber Back Cover Protective Case for iPhone 11 6.1 inch.
This is a must-have for anyone who wants to protect their phone while maintaining a sleek and sophisticated look.

Impressively this back cover is made from high-quality silicone and microfiber materials, making it soft and smooth to the touch. The standout feature of this product is its shockproof design, ensuring that your phone remains protected from accidental drops and bumps. The precision cutouts allow easy access to all ports and buttons without the need to remove the cover.

In essence the NILLKIN back cover offers superior protection and functionality for your iPhone 11. The only weakness of this product is that it may not be suitable for those who prefer a bulkier and more rugged design.

Overall I would highly recommend the NILLKIN Smooth Shockproof Soft Liquid Silicone Rubber Back Cover Protective Case for iPhone 11 6.1 inch. It is a top performer in terms of protection and style, making it a wise investment for anyone who values their phone's safety and appearance.