Open Box Seac Undersuit Unifleece
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Open Box Seac Undersuit Unifleece - S (Small) is backordered and will ship as soon as it is back in stock.
Pickup currently unavailable at In Store
All Seac size charts on one page. Imperial in bold, metric underneath.
Men’s wetsuits
Seac men's diving wetsuits
| Man | Height ft/in · cm |
Weight lb · kg |
Chest in · cm |
|---|---|---|---|
| S |
5′5″–5′9″ 166–175 |
121–150 55–68 |
34.6–36.2 88–92 |
| M |
5′7″–5′10″ 170–178 |
141–172 64–78 |
37–39.4 94–100 |
| L |
5′9″–6′0″ 176–184 |
165–194 75–88 |
38.6–40.9 98–104 |
| XL |
5′10″–6′2″ 178–189 |
185–214 84–97 |
40.2–43.3 102–110 |
| 2XL |
6′1″–6′4″ 186–194 |
203–238 92–108 |
42.9–45.7 109–116 |
| 3XL |
6′4″–6′6″ 192–198 |
240–260 109–118 |
44.9–47.2 114–120 |
| 4XL |
6′4″–6′8″ 193–202 |
243–260 110–118 |
45.7–48.8 116–124 |
Seac men's freediving and spearfishing wetsuits
| Man | Height ft/in · cm |
Weight lb · kg |
Chest in · cm |
|---|---|---|---|
| S |
5′5″–5′9″ 166–175 |
121–150 55–68 |
34.6–36.2 88–92 |
| M |
5′7″–5′10″ 170–178 |
141–172 64–78 |
37–39.4 94–100 |
| L |
5′9″–6′0″ 176–184 |
165–194 75–88 |
38.6–40.9 98–104 |
| XL |
5′10″–6′2″ 178–189 |
185–214 84–97 |
40.2–43.3 102–110 |
| 2XL |
6′1″–6′4″ 186–194 |
203–238 92–108 |
42.9–45.7 109–116 |
| 3XL |
6′4″–6′6″ 192–198 |
240–260 109–118 |
44.9–47.2 114–120 |
Women’s wetsuits
Seac women's diving wetsuits
| Lady | Height ft/in · cm |
Weight lb · kg |
Chest in · cm |
|---|---|---|---|
| XS |
5′1″–5′3″ 155–161 |
115–128 52–58 |
30.3–32.7 77–83 |
| S |
5′3″–5′5″ 160–166 |
126–139 57–63 |
32.3–34.6 82–88 |
| M |
5′5″–5′7″ 165–171 |
137–157 62–71 |
34.3–36.2 87–92 |
| L |
5′8″–5′10″ 172–178 |
148–165 67–75 |
37–38.6 94–98 |
| XL |
5′10″–6′0″ 177–183 |
165–183 75–83 |
38.2–40.2 97–102 |
| 2XL |
5′10″–6′1″ 179–185 |
185–203 84–92 |
39.4–41.7 100–106 |
Drysuits
Seac men's drysuits
Height, weight and chest
| Man | Height ft/in · cm |
Weight lb · kg |
Chest in · cm |
|---|---|---|---|
| S |
5′5″–5′9″ 166–175 |
121–150 55–68 |
34.6–36.2 88–92 |
| M |
5′7″–5′10″ 170–178 |
141–172 64–78 |
37–39.4 94–100 |
| L |
5′9″–6′0″ 176–184 |
165–194 75–88 |
38.6–40.9 98–104 |
| L2P |
5′9″–6′0″ 176–184 |
176–203 80–92 |
39.4–43.3 100–110 |
| XL |
5′10″–6′2″ 178–189 |
185–214 84–97 |
40.2–43.3 102–110 |
| XL2P |
5′10″–6′2″ 178–189 |
212–229 96–104 |
42.5–45.7 108–116 |
| 2XL |
6′1″–6′4″ 186–194 |
203–238 92–108 |
42.9–45.7 109–116 |
| XXL2P |
6′1″–6′4″ 186–194 |
225–251 102–114 |
44.1–47.2 112–120 |
| 3XL |
6′4″–6′6″ 192–198 |
240–260 109–118 |
44.9–47.2 114–120 |
| XXXL2P |
6′4″–6′6″ 192–198 |
247–265 112–120 |
45.3–48.4 115–123 |
| 4XL |
6′4″–6′8″ 193–202 |
249–282 113–128 |
45.7–51.2 116–130 |
Boots
| Man | Boots |
|---|---|
| S | 40–41 |
| M | 41–42 |
| L | 42–43 |
| L2P | 42–43 |
| XL | 43–44 |
| XL2P | 43–44 |
| 2XL | 44–45 |
| XXL2P | 44–45 |
| 3XL | 45–46 |
| XXXL2P | 45–46 |
| 4XL | 46/47 |
Hoods, boots and gloves
Seac hoods, footwear and gloves
Hoods
| Hood size | Head circumference in · cm |
|---|---|
| XS |
20.9–21.3 53–54 |
| S |
21.6–22 55–56 |
| M |
22.4–22.8 57–58 |
| L |
23.2–23.6 59–60 |
| XL |
24–24.4 61–62 |
| 2XL |
24.8–25.1 63–64 |
| 3XL |
25.6–26 65–66 |
Footwear
| Footwear size | Foot length in · cm |
|---|---|
|
2XS EU size 36–37 · US size 4–4.5 · UK size 4–4.5 |
9 23 |
|
XS EU size 37–38 · US size 4.5–5.5 · UK size 4.5–5.5 |
9.4 24 |
|
S EU size 38–39 · US size 5.5–6.5 · UK size 5.5–6.5 |
9.8 25 |
|
M EU size 40–41 · US size 7–8 · UK size 7–7.5 |
10.2 26 |
|
L EU size 42–43 · US size 8.5–9.5 · UK size 8–9 |
10.6 27 |
|
XL EU size 43–44 · US size 10–11 · UK size 9–10 |
11 28 |
|
2XL EU size 45–46 · US size 11.5–12.5 · UK size 11–11.5 |
11.4 29 |
|
3XL EU size 47–48 · US size 12.5–13 · UK size 12.5–13 |
11.8 30 |
For the most accurate fit, we recommend referring to the foot length indicated in the size chart.
Gloves
| Glove size | EU size | Palm circumference in · cm |
|---|---|---|
| 2XS | 5 |
7.00–7.48 17.5–19 |
| XS | 6 |
7.48–8.07 19–20.5 |
| S | 7 |
8.07–8.66 20.5–22 |
| M | 8 |
8.66–9.25 22–23.5 |
| L | 9 |
9.25–9.84 23.5–25 |
| XL | 10 |
9.84–10.43 25–26.5 |
| 2XL | 11 |
10.43–11.02 26.5–28 |
Fins
Seac F100 Pro fins
| Size EU | Size UK | Size US | Weight lb · g |
Fin length (A) in · cm |
|---|---|---|---|---|
| 36/37 | 4/4.5 | 4/5 |
1.31 593 |
22.44 57 |
| 38/39 | 5.5/6.5 | 6/6.5 |
1.28 580 |
22.44 57 |
| 40/41 | 7/7.5 | 7/8 |
1.56 707 |
24.21 61.5 |
| 42/43 | 8/9 | 8.5/9.5 |
1.85 839 |
25.59 65 |
| 44/45 | 10/11 | 10/11 |
2.03 923 |
26.37 67 |
| 46/47 | 11.5/12.5 | 12/12.5 |
2.07 940 |
26.37 67 |
* The indicated weight refers to a single fin
Seac F1 fins
| Size | EU size | Foot length (A) in · cm |
Weight lb · g |
Fin length (B) in · cm |
|---|---|---|---|---|
| XS/S | 36/38 |
8.6–9.5 22–24 |
1.66 753 |
24.01 61 |
| S/M | 39/41 |
9.5–10.2 24–26 |
1.74 789 |
24.01 61 |
| M/L | 42/43 |
10.2–11 26–28 |
1.80 815 |
25.19 64 |
| L/XL | 45/47 |
11.4–12.2 29–31 |
2.11 955 |
26.37 67 |
From Seac’s chart: * The indicated weight refers to a single fin
Seac Propulsion fins
| Size | Weight lb · g |
Fin length (A) in · cm |
|---|---|---|
|
S/M Size EU 39/41 · Size UK 6.5–7.5 · Size US 6.5–8 |
1.88 852 |
24.40 62 |
|
M/L Size EU 42/44 · Size UK 8.5/10 · Size US 8.5/10 |
2.22 1009 |
26.37 67 |
|
L/XL Size EU 45/47 · Size UK 11/12.5 · Size US 11/12.5 |
2.56 1163 |
27.16 69 |
From Seac’s chart: The indicated weight refers to a single fin The sizes are indicatives and depends at the socks you want to wear
Seac Motus fins
| Size EU | Size UK | Size US | Weight lb · g |
Fin length (A) in · cm |
|---|---|---|---|---|
| 35/36 | 3/4 | 3/3.5 |
2.09 948 |
33.07 84 |
| 36/38 | 3.5/5 | 4.5/5.5 |
2.09 948 |
33.07 84 |
| 39/40 | 5.5/6.5 | 6.5/7 |
2.13 965 |
33.85 86 |
| 41/42 | 7/8 | 8/8.5 |
2.14 972 |
34.25 87 |
| 43/44 | 8.5/9.5 | 9.5/10 |
2.19 993 |
34.64 88 |
| 45/46 | 10/11 | 10/11 |
2.35 1064 |
35.43 90 |
| 47/48 | 12/13 | 12.5/13.5 |
2.51 1138 |
35.82 91 |
From Seac’s chart: * The indicated weight refers to a single fin
Seac Talent fins
| Size EU | Size UK | Size US | Weight lb · g |
Fin length (A) in · cm |
|---|---|---|---|---|
| 35/36 | 3/4 | 3/3.5 |
2.09 948 |
33.07 84 |
| 36/38 | 3.5/5 | 4.5/5.5 |
2.09 948 |
33.07 84 |
| 39/40 | 5.5/6.5 | 6.5/7 |
2.13 965 |
33.85 86 |
| 41/42 | 7/8 | 8/8.5 |
2.14 972 |
34.25 87 |
| 43/44 | 8.5/9.5 | 9.5/10 |
2.19 993 |
34.64 88 |
| 45/46 | 10/11 | 10/11 |
2.35 1064 |
35.43 90 |
| 47/48 | 12/13 | 12.5/13.5 |
2.51 1138 |
35.82 91 |
From Seac’s chart: * The indicated weight refers to a single fin
Source: Seac’s size chart (original chart 1, original chart 2, original chart 3, original chart 4, original chart 5, original chart 6, original chart 7, original chart 8, original chart 9) and Seac’s current size chart. Where the chart prints only one unit, we converted the other: inches from centimeters (to the nearest 0.1″); feet and inches from centimeters (to the nearest inch); pounds from kilograms (to the nearest pound).
Condition Note
- Open Box: This product is Open Box. It is generally unused, either returned by a customer or displayed in our showroom, and may have minor, unnoticeable blemishes. Original packaging may be damaged or missing.
Payment & Security
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Product Information
The Seac Undersuit Unifleece is an essential addition to your scuba diving gear, designed to keep you warm and comfortable in cooler waters. This high-quality undergarment is crafted from soft, lightweight, and breathable material, ensuring a snug fit while allowing for optimal movement beneath your drysuit. Equipped with a water-repellant outer layer, the Unifleece provides an extra barrier against the elements, making it ideal for those who frequently dive in challenging conditions.
Featuring a double-ended front zipper and ankle stirrups, this undergarment allows for easy donning of your drysuit without any uncomfortable bunching. The Unifleece is part of the drysuits - undergarments full - unisex category, and it truly stands out with its thoughtful design that prioritizes both functionality and comfort. Whether you're navigating through frigid waters or enjoying a leisurely dive, the insulating properties of this undergarment will help maintain your core temperature.
Perfect for divers seeking quality and performance, the Seac Undersuit Unifleece is compatible with various drysuit brands and models. Its unisex design further ensures a versatile fit for all divers. Elevate your diving experience and stay warm on your underwater adventures with this outstanding insulating undergarment. Don't miss the chance to enhance your diving gear—add the Seac Undersuit Unifleece to your collection today!
- Lightweight, breathable, 2-layer undergarment keeps you warm while diving in cold environments
- Outer layer repels water to help keep you dry
- Double-Ended front zipper gets you in and out quickly
- Ankle stirrups prevent bunching when putting on your drysuit
- Easy-access zippered pockets for carrying extra gear
⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.


















