Frame Size Chart

Have a pair of frames you like the way they fit? Look inside of them and see if a three number sequence is visible. If so, use those three numbers to find a SPEX frame similar in size. Not a perfect match? We can help you find the right frame for you. 


✨ chart is best viewed in landscape on mobile devices ✨


Small to Large by Front Measurement 

Frame Name Frame Size
A- B- C
Front Measurement
in mm/inches
Couch Cuddles
48- 15- 135
118/4.65
Matching Collar & Leash
47- 16- 135
120/4.72
Head Pets And Belly Rubs 49- 19- 140 128/5.04
Long Hair, Short Hair, Don't Care
52- 16- 140
128/5.04
Naptime On Dad's Favorite Book 48- 20- 145 128/5.04
Opening The Treat Bag 45- 20- 140 130/5.12
Taking The Tag Off The New Toy Joy 48- 19- 140 130/5.12
Slow Blinks Mean 'I Love You' 53- 18- 145 132/
5.2
Dream Cattio
55- 16- 145
132/5.17
Head Pets And Belly Rubs 52- 19- 145 132/5.2
Playtime In The Park 53- 17- 140 132/5.2
Obedience School A+ Student 53- 17- 140 133/5.23
Round The Block
47- 23- 145
134/5.27
Paw Prints On The Beach 54- 16- 145 134/5.28
All The Air Biscuits 56- 18- 140 135/
5.31
Cat Tail Wrapped Around Your Leg 50- 20- 145 135/
5.31
Fancy Cat 54- 17- 145 135/
5.31
Grab the Leash And Let's Go 48- 21- 140 135/
5.31
Just Because It's Called 'Fetch' Doesn't Mean I'll Bring The Ball Back 52- 19- 145 135/
5.31
Lounging In The Perfect Sunny Spot 53- 18- 140 135/
5.31
Taking The Tag Off The New Toy Joy 52- 19- 145 135/
5.31
Opening The Treat Bag 48- 20- 145 135/5.31
Hyperspeed Tails Wags 50- 18- 145 138/5.43
Car Ride With The Windows Down 57- 15- 150 140/
5.51
The Midas Paw - Bubbles Collection 50- 20- 145 140/
5.51
The Zoomies 55- 17- 150 140/
5.51
The Midas Paw 50- 20- 145 140/5.51
All The Air Biscuits 58- 18- 145 145/5.71
Playtime In The Park 57- 17- 145 145/5.71
Pucci, Arfmani, or Pawda - Only The Best For My Dog 53- 19- 145 145/5.71
Watching Birds While Perched On A Windowsill 54- 20- 140 145/5.71
#adoptdontshop
57- 18- 145
145/5.71
Gimme All The Catnip 59- 18- 150 150/5.9

Small to Large by First Number of Frame Size 

Frame Name
Frame Size 
A- B- C
Front Measurement
in mm/inches
Opening The Treat Bag
45- 20- 140
130/5.12
Matching Collar & Leash 47- 16- 135 120/4.72
Round The Block 47- 23- 145 134/5.27
Couch Cuddles 48- 15- 135 118/4.65
48- 19- 140
130/5.12
48- 20- 145
135/5.31
Naptime On Dad's Favorite Book
48- 20- 145
128/5.04
Grab the Leash And Let's Go
48- 21- 140
135/
5.31
Head Pets And Belly Rubs
49- 19- 140
128/5.04
Hyperspeed Tails Wags
50- 18- 145
138/5.43
Cat Tail Wrapped Around Your Leg
50- 20- 145
135/
5.31
The Midas Paw 50- 20- 145 140/5.51
The Midas Paw - Bubbles Collection 50- 20- 145 140/
5.51
Long Hair, Short Hair, Don't Care 52- 16- 140 128/5.04
Taking The Tag Off The New Toy Joy
52- 19- 145
135/
5.31
Just Because It's Called 'Fetch' Doesn't Mean I'll Bring The Ball Back 52- 19- 145 135/
5.31
Head Pets And Belly Rubs
52- 19- 145
132/5.2
Playtime In The Park
53- 17- 140
132/5.2
Obedience School A+ Student 53- 17- 140 133/5.23
Lounging In The Perfect Sunny Spot 53- 18- 140 135/
5.31
Slow Blinks Mean 'I Love You' 53- 18- 145 132/
5.2
Pucci, Arfmani, or Pawda - Only The Best For My Dog 53- 19- 145 145/5.71
Paw Prints On The Beach 54- 16- 145 134/5.28
Fancy Cat 54- 17- 145 135/
5.31
Watching Birds While Perched On A Windowsill 54- 20- 140 145/5.71
Dream Cattio 55- 16- 145 132/5.17
The Zoomies 55- 17- 150 140/
5.51
All The Air Biscuits 56- 18- 140 135/
5.31
Car Ride With The Windows Down 57- 15- 150 140/
5.51
#adoptdontshop 57- 18- 145 145/5.71
Playtime In The Park 57- 17- 145
145/5.71
All The Air Biscuits 58- 18- 145 145/5.71
Gimme All The Catnip 59- 18- 150 150/5.9