Glycerin 23
Glycerin 23
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Features
Features
Specs
Specs
For runners who want supreme softness for their miles. The Glycerin 23 feels soft and plush under your foot, yet it's still lightweight enough to be a workhorse for everyday runs. The shoe features our premium cushioning, engineered to give you both a powerful toe-off and a plush landing in every step. Road running, Everyday runs, Long runs Plush Experience luxuriously soft landings with powerful toe-offs. Balanced support Secure heel with dynamic forefoot helps provide inherent stability 8mm 9.5oz / 269.3g Super-soft cushioning, accommodating fit around the foot, smooth and stable transitions 58.1 % Recycled materials in the upper Running Responsibly We are committed to a long-term, science-based approach to sustainability. We know it's time to think bigger about the impact our products and their full life cycle have on people and the planet. We are using sound science to address climate change and align our efforts across every level of our business to reduce carbon emissions. This includes product designs, materialization, manufacturing, and our global supply chain. As we create new gear and run our global business, we also want to minimize our impact on the planet — so we are limiting our reliance on non-renewable resources by using more sustainable materials and reducing waste. An ethical global supply chain starts with factories and suppliers who share our values and our commitments to respect human rights, advance worker well-being and ensure sustainable manufacturing.
Climate action
Details
Details
Cushion
Support
Midsole drop
Weight
Features

SIZE GUIDE
Apparel and accessory measurements are shown as inches / centimeters unless otherwise noted.
Choose the size that matches your largest measurement. For shoes, leave about a thumb’s width at the toe.
Women’s shoes
| US | UK | Europe |
|---|---|---|
| 5 | 3 | 35.5 |
| 5.5 | 3.5 | 36 |
| 6 | 4 | 36.5 |
| 6.5 | 4.5 | 37.5 |
| 7 | 5 | 38 |
| 7.5 | 5.5 | 38.5 |
| 8 | 6 | 39 |
| 8.5 | 6.5 | 40 |
| 9 | 7 | 40.5 |
| 9.5 | 7.5 | 41 |
| 10 | 8 | 42 |
| 10.5 | 8.5 | 42.5 |
| 11 | 9 | 43 |
| 11.5 | 9.5 | 44 |
| 12 | 10 | 44.5 |
| 12.5 | 10.5 | 45 |
| 13 | 11 | 45.5 |
Men’s & all-gender shoes
| US | UK | Europe |
|---|---|---|
| 5 | 4 | 37.5 |
| 5.5 | 4.5 | 38 |
| 6 | 5 | 38.5 |
| 6.5 | 5.5 | 39 |
| 7 | 6 | 40 |
| 7.5 | 6.5 | 40.5 |
| 8 | 7 | 41 |
| 8.5 | 7.5 | 42 |
| 9 | 8 | 42.5 |
| 9.5 | 8.5 | 43 |
| 10 | 9 | 44 |
| 10.5 | 9.5 | 44.5 |
| 11 | 10 | 45 |
| 11.5 | 10.5 | 45.5 |
| 12 | 11 | 46 |
| 12.5 | 11.5 | 46.5 |
| 13 | 12 | 47.5 |
| 14 | 13 | 48.5 |
| 15 | 14 | 49.5 |
| 16 | 15 | 50.5 |
| Width | Men’s / All Gender | Women’s |
|---|---|---|
| Narrow | B | 2A |
| Medium | D | B |
| Wide | 2E | D |
| Extra Wide | 4E | 2E |
Women’s apparel
| Size | Chest (in / cm) | Waist (in / cm) | Hip (in / cm) |
|---|---|---|---|
| XXS | 28-31 / 71-79 | 22-24 / 56-61 | 31-34 / 79-86 |
| XS | 31-33 / 79-84 | 24-26 / 61-66 | 34-36 / 86-91 |
| S | 33-35 / 84-89 | 26-28 / 66-71 | 36-38 / 91-97 |
| M | 35-37 / 89-94 | 28-30 / 71-76 | 38-40 / 97-102 |
| L | 37-40 / 94-102 | 30-34 / 76-86 | 40-43 / 102-109 |
| XL | 40-44 / 102-112 | 34-38 / 86-97 | 43-48 / 109-122 |
| XXL | 44-49 / 112-124 | 38-44 / 97-112 | 48-52 / 122-132 |
| 2X | 49-51 / 124-129 | 44-47 / 112-119 | 52-55 / 132-140 |
| 3X | 51-54 / 129-137 | 47-50 / 119-127 | 55-58 / 140-147 |
| 4X | 54-57 / 137-144 | 50-55 / 127-139 | 58-61 / 147-155 |
| Size | Waist (in / cm) | Hips (in / cm) |
|---|---|---|
| XXS | 22-24 / 55-61 | 31-34 / 79-86 |
| XS | 24-26 / 61-66 | 34-36 / 86-91 |
| S | 26-28 / 66-71 | 36-38 / 91-97 |
| M | 28-30 / 71-76 | 38-40 / 97-102 |
| L | 30-34 / 76-86 | 40-43 / 102-109 |
| XL | 34-38 / 86-97 | 43-48 / 109-122 |
| XXL | 38-44 / 97-112 | 48-52 / 122-132 |
| 2X | 44-47 / 112-119 | 52-55 / 132-140 |
| 3X | 47-50 / 119-127 | 55-58 / 140-147 |
| 4X | 50-54 / 127-139 | 58-61 / 147-154 |
Men’s apparel
| Size | Chest (in / cm) | Waist (in / cm) | Hip (in / cm) |
|---|---|---|---|
| XS | 33-35 / 84-89 | 28-30 / 71-76 | 33-35 / 84-89 |
| S | 35-37 / 89-94 | 30-32 / 76-81 | 35-37 / 89-94 |
| M | 37-40 / 94-102 | 32-34 / 81-86 | 37-39 / 94-99 |
| L | 40-43 / 102-109 | 34-37 / 86-94 | 39-43 / 99-109 |
| XL | 43-47 / 109-119 | 37-42 / 94-107 | 43-47 / 109-119 |
| XXL | 47-52 / 119-132 | 43-47 / 109-119 | 47-52 / 119-132 |
| Size | Waist (in / cm) | Hips (in / cm) |
|---|---|---|
| XS | 28-30 / 71-76 | 33-35 / 83-88 |
| S | 30-32 / 76-81 | 35-37 / 88-94 |
| M | 32-34 / 81-86 | 37-39 / 94-99 |
| L | 34-37 / 86-94 | 39-43 / 99-109 |
| XL | 37-42 / 94-106 | 43-47 / 109-119 |
| XXL | 42-47 / 106-119 | 47-52 / 119-132 |
Women’s bras
| Band | A | B | C | D |
|---|---|---|---|---|
| 30 | XS | XS | XS | S |
| 32 | S | S | S | M |
| 34 | M | M | M | L |
| 36 | L | L | L | XL |
| 38 | XL | XL | XL | XXL |
| 40 | XXL | XXL | XXL | — |
| Band | A | B | C | D |
|---|---|---|---|---|
| 65 | XS | XS | XS | S |
| 70 | S | S | S | M |
| 75 | M | M | M | L |
| 80 | L | L | L | XL |
| 85 | XL | XL | XL | XXL |
| 90 | XXL | XXL | XXL | — |
Socks
| Sock size | US Women’s | US Men’s | UK | European |
|---|---|---|---|---|
| S | 4-6.5 | — | 3-4.5 | 34-37 |
| M | 7-9.5 | 6-8.5 | 5-7.5 | 38-41 |
| L | 10-12.5 | 9-11.5 | 8-10.5 | 42-45 |
| XL | — | 12-14.5 | 11-13.5 | 46-49 |
Accessories
| Size | Measurement |
|---|---|
| XS/S | 8-11 / 20-28 |
| M/L | 11-14 / 28-35.5 |
| XL/XXL | 14-16 / 35.5-40.5 |
| Size | Measurement |
|---|---|
| XS | 7 or less / 17.5 or less |
| S | 7-7.5 / 17.5-19 |
| M | 7.5-8 / 19-20.5 |
| L | 8-9 / 20.5-23 |
| XL | 9 or longer / 23 or longer |
| Size | Measurement |
|---|---|
| S/M | 19-22 / 49-56 |
| L/XL | 21-23 / 54-60 |
How to measure
Measure around the fullest part with the tape parallel to the floor.
Measure around your natural waist, halfway between the lowest rib and the top of the hip bone.
Measure around the fullest part while standing naturally with your feet together.
Fitted hugs the body. Semi-fitted follows the body with room to move; most Brooks apparel is semi-fitted.