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The Silhouette SPX Illusion Fullrim 1604 Eyeglasses bring together Austrian precision engineering and modern cat-eye style in a frame that's built for all-day prescription wear. Part of Silhouette's bestselling SPX Illusion collection—which has sold over 430,000 pairs worldwide—the 1604 delivers the brand's signature featherlight comfort in a full-rim design that flatters and stays put.
SPX®+ Material: Engineered for Comfort
These frames are made from Silhouette's patented SPX®+ polymer composite, manufactured in-house at their Austrian facility. This isn't standard plastic. SPX®+ is extremely flexible yet highly durable and resistant to warping, ensuring a perfect fit that can be customized to your face. The material is hypoallergenic, making it ideal if you have sensitive skin or wear glasses all day. The frames are practically weightless—they contour to your nose and stay in place without slipping or creating pressure points.
The integrated nose pads and flexible temples are fully adjustable by your optician for an ergonomic, personalized fit. An integrated snap hinge provides a clean, modern look while adding durability. The full-rim construction gives you complete lens security and a polished, finished appearance.
Cat-Eye Shape with Versatile Color Options
The 1604 features a soft cat-eye silhouette—sometimes described as a butterfly shape—that adds subtle lift and definition without being overly dramatic. It's a universally flattering shape that works for round, oval, and heart-shaped faces. Available in 25 color options across two sizes (52mm and 54mm lens width), you'll find everything from classic blacks and havana tortoise to fashion-forward gradients in violet, rose, petrol, jade green, and soft apricot. Many colors feature Silhouette's signature gradient or tri-color treatments, hand-dipped to ensure consistency along the entire frame.
Prescription-Ready for Your Vision Needs
These frames are designed to accept your prescription lenses—single vision, progressive, or readers. The full-rim design provides excellent lens support, and the frame's lightweight construction means even higher prescriptions won't feel heavy. You can also add custom polarized or non-polarized clip-on sunglasses if you need sun protection. The 14mm bridge width and temple lengths of 130mm (size 52) or 135mm (size 54) accommodate a wide range of fits.
Every pair ships with a protective case and cleaning cloth. Silhouette has been exporting premium eyewear to 100 countries since 1964, and the SPX Illusion line represents decades of R&D expertise in lightweight, comfortable frame design. If you're looking for prescription eyeglasses that combine European craftsmanship, hypoallergenic materials, and a refined cat-eye look, the SPX Illusion Fullrim 1604 is a smart choice.
Product Details
Product DetailsModel
SPX Illusion FullrimShape
Gender
Bridge Type
Rim Type
Age Group
Color Details
Color DetailsFrame Color
GrayColor Code
6610Color Description
grey
Color Code
9210Color Description
black
Frame Color
PurpleColor Code
4010Color Description
violet
Color Code
8510Color Description
creme
Frame Color
PurpleColor Code
4030Color Description
violet
Frame Color
PurpleColor Code
4010Color Description
violet
Frame Color
GrayColor Code
6610Color Description
grey
Frame Color
PurpleColor Code
4030Color Description
violet
Color Code
3530Color Description
rose
Color Code
9210Color Description
black
Color Code
3530Color Description
rose
Color Code
8510Color Description
creme
Frame Color
GreenColor Code
5810Color Description
green
Frame Color
GreenColor Code
5810Color Description
green
Color Code
9410Color Description
black
Color Code
5110Color Description
petrol
Color Code
5110Color Description
petrol
Frame Color
PurpleColor Code
4110Color Description
violet
Color Code
9410Color Description
black
Frame Color
PurpleColor Code
4110Color Description
violet
Frame Color
GreenColor Code
5530Color Description
green
Frame Color
GreenColor Code
5530Color Description
green
Frame Color
OrangeColor Code
2630Color Description
orange
Frame Color
OrangeColor Code
2630Color Description
orange
Frame Color
OrangeColor Code
2530Color Description
orange
Size Details
Size DetailsSize
5414
Size
5414
Size
5414
Size
5414
Size
5214
Size
5214
Size
5214
Size
5414
Size
5414
Size
5214
Size
5214
Size
5214
Bridge Width
14.00Temple Length
135.00Size
5414
Bridge Width
14.00Temple Length
130.00Size
5214
Bridge Width
14.00Temple Length
135.00Size
5414
Bridge Width
14.00Temple Length
135.00Size
5414
Bridge Width
14.00Temple Length
130.00Size
5214
Bridge Width
14.00Temple Length
135.00Size
5414
Bridge Width
14.00Temple Length
130.00Size
5214
Bridge Width
14.00Temple Length
130.00Size
5214
Bridge Width
14.00Temple Length
130.00Size
5214
Bridge Width
14.00Temple Length
135.00Size
5414
Bridge Width
14.00Temple Length
130.00Size
5214
Bridge Width
14.00Temple Length
135.00Size
5414
Bridge Width
14.00Temple Length
130.00Size
5214
Silhouette SPX Illusion Fullrim 1604 Eyeglasses
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Frequently Asked Questions
Are Silhouette SPX Illusion 1604 eyeglasses prescription-ready?
Yes, the Silhouette SPX Illusion Fullrim 1604 eyeglasses are fully prescription-ready. The full-rim design securely holds prescription lenses including single vision, progressive, and reading lenses. The frame's lightweight SPX®+ material ensures comfort even with higher prescription lenses, and the adjustable nose pads and temples allow your optician to customize the fit for optimal optical alignment.
What is SPX®+ material and why is it hypoallergenic?
SPX®+ is Silhouette's patented polymer composite material, manufactured in Austria as an alternative to standard plastic. It's hypoallergenic because it's formulated to reduce allergic reactions in sensitive individuals. The material is extremely flexible yet durable and resistant to warping, making it ideal for people who wear glasses all day and need maximum comfort without pressure points or skin irritation.
How lightweight are the SPX Illusion 1604 frames?
The SPX Illusion 1604 frames are exceptionally lightweight—described as "practically weightless" by Silhouette. The SPX®+ material is significantly lighter than standard acetate while maintaining strength and durability. The frames contour to your nose and stay in place all day without slipping, and many wearers report they forget they're wearing glasses due to the minimal weight and pressure-free fit.
What face shapes work best with the 1604 cat-eye style?
The Silhouette SPX Illusion 1604 features a soft cat-eye (butterfly) shape that's universally flattering. The angular, upswept corners work particularly well for round and oval faces by adding definition and structure. The lifted shape also complements heart-shaped faces. Available in two sizes—52mm and 54mm lens width—you can choose the size that best matches your facial proportions for a balanced, comfortable fit.
Can I adjust the fit of Silhouette SPX Illusion frames?
Yes, the SPX Illusion 1604 frames are fully adjustable. The integrated nose pads and flexible temples can be customized by your optician to ensure an ergonomic, personalized fit. The SPX®+ material is extremely flexible and can be adjusted to match the contours of your face, ensuring the frames stay in place comfortably without slipping or creating pressure points throughout the day.
What sizes are available for the SPX Illusion 1604?
The Silhouette SPX Illusion Fullrim 1604 is available in two sizes: 52-14-130 (52mm lens width, 14mm bridge, 130mm temple length) and 54-14-135 (54mm lens width, 14mm bridge, 135mm temple length). The 52mm size works well for smaller to medium faces, while the 54mm size accommodates medium to larger facial features. Both sizes feature the same cat-eye shape and are available in 25 color options.
Compare With Similar Frames
How the Silhouette SPX Illusion Fullrim 1604 Eyeglasses stacks up against the closest alternatives we carry.
- Same SPX®+ hypoallergenic material and Austrian craftsmanship
- Slightly different frame shape may suit different face shapes
- Available in similar gradient and tri-color options
- Identical SPX®+ material and hypoallergenic properties
- Same Austrian manufacturing quality and adjustability
- Available in overlapping color options
- Same SPX®+ lightweight, hypoallergenic material
- Features newer geometric shapes with soft curves and angular structure
- Part of the 2025 refresh with bold, trend-driven colors
Read the full comparison
Silhouette SPX Illusion 1604 vs. Other SPX Illusion Models
If you're drawn to the Silhouette SPX Illusion collection, you're choosing frames built on the same foundation: Silhouette's patented SPX®+ polymer composite, Austrian craftsmanship, hypoallergenic comfort, and that signature featherlight feel. The question becomes which shape works best for your face and style.
SPX Illusion 1604 vs. 1603
The 1604 features a soft cat-eye (butterfly) silhouette with upswept corners that add lift and definition—ideal for round or oval faces. The 1603 offers a different frame shape within the same collection, using identical SPX®+ material and adjustability. If you prefer the cat-eye look and want that subtle lift, the 1604 is your choice. If the 1603's shape better suits your facial proportions, you'll get the same lightweight comfort and quality in a different aesthetic. Both are available in similar gradient and tri-color options.
SPX Illusion 1604 vs. 1605
The 1605 is another popular full-rim model in the SPX Illusion family, priced similarly ($216.51–$334.60). It shares the 1604's SPX®+ material, hypoallergenic properties, and Austrian manufacturing. The key difference is shape: the 1605 is not a cat-eye design, so it won't provide the same uplifted, angular look. The 1605 also has a slightly wider bridge (15mm vs. 14mm), which may fit differently depending on your nose width. If you want the cat-eye aesthetic, stick with the 1604. If you prefer a more neutral shape with the same material benefits, the 1605 is a solid alternative.
SPX Illusion 1604 vs. 1617
The 1617 is part of Silhouette's 2025 SPX Illusion refresh, featuring newer geometric shapes that play with soft curves and angular structure. It's edgier and more contemporary than the 1604's classic cat-eye. The 1617 also comes in bold, trend-driven colors like canary yellow and green havana. However, it has a smaller lens width (49mm) compared to the 1604's 52mm and 54mm options, so it may not fit larger faces as comfortably. If you want a refined, versatile cat-eye that works for daily wear, the 1604 is the safer choice. If you're looking for a statement piece with a more modern, angular vibe, explore the 1617.
Why Choose the SPX Illusion 1604?
The 1604 hits the sweet spot: a universally flattering cat-eye shape, 25 color options (the most variety in the lineup), two size choices, and that proven SPX®+ comfort. It's a versatile, everyday frame that adds personality without being overly bold. If you want lightweight prescription eyeglasses with a soft feminine lift and Austrian quality, the SPX Illusion Fullrim 1604 is an excellent choice.
At a Glance
Silhouette SPX Illusion Fullrim 1603 Eyeglasses
Pros:
- Same SPX®+ hypoallergenic material and Austrian craftsmanship
- Slightly different frame shape may suit different face shapes
- Available in similar gradient and tri-color options
- Same lightweight, adjustable fit technology
Cons:
- Different shape may not provide the same cat-eye lift as the 1604
- Slightly different sizing (53-14-130) may not fit all faces equally well
Silhouette SPX Illusion Fullrim 1605 Eyeglasses
Pros:
- Identical SPX®+ material and hypoallergenic properties
- Same Austrian manufacturing quality and adjustability
- Available in overlapping color options
- Similar price range ($216.51–$334.60)
Cons:
- Different frame shape (not cat-eye) changes the overall aesthetic
- Slightly different bridge width (15mm vs 14mm) may affect fit
Silhouette SPX Illusion 1617 Eyeglasses
Pros:
- Same SPX®+ lightweight, hypoallergenic material
- Features newer geometric shapes with soft curves and angular structure
- Part of the 2025 refresh with bold, trend-driven colors
- Same Austrian craftsmanship and adjustable fit
Cons:
- More angular, edgier design may not suit those preferring classic cat-eye
- Smaller lens width (49mm) may not fit larger faces as well
- Limited color availability compared to the 1604's 25 options