Customers love the Rectangle Glasses from Zenni for their exceptional quality, stylish designs, and affordability. Many reviewers appreciated the variety of styles available and noted that the glasses fit well without the need for adjustments. The blue light technology was particularly mentioned favorably for alleviating eye strain. Although some expressed minor concerns about fit and color discrepancies, overall, the sentiment is highly positive, with many expressing a willingness to purchase again and recommending the product to others.